I don't have an SNG, but I have an SMF, and I like it a lot.
It costs a lot, but there are reasons for that. Some are good, some not so good.
Strider is a small company. Smaller companies with lower outputs have to charge more. More volume allows a company to charge less.
Strider knives are hand-made. Even the production ones. Knives made on a production line cost less to make.
Strider uses a legal form of price-fixing to make their knives sell at the MSRP. They only sell knives to licensed dealers who do not get any more knives if they do not sell at the MSRP. You can think this is evil, or a viable way to maintain brand intregrity. Just remember that CRK does it too. If you had to pay MSRP for every knife, a Strider would not be so expensive in comparison. You just get great deals on Spyderco.
Strider has hype and mystique for collectors. People will pay that much. Since collectors will pay that much, people who are just knife users are forced to spend that much as well.
Because of these reasons, a mass produced production knife like a Manix (just to use an example that is often compared to Strider's folders) will be a better bargain in terms of performance for the money. But which is a better knife is totally subjective. If you prefer the Manix, well, it is also cheaper, so buy it. If you prefer the Strider, you have to decide whether or not you prefer it enough to buy it.
I own a Manix. I own an SMF. I love both. I prefer the SMF. 9 times out of 10, I'd rather have the SMF in my pocket. Nearly 100% of the time, I take the SMF with me and not the Manix. For me, the SMF has given me a lot more for the money.
Why do I prefer the SMF? I think it feels better. It is more comfortable, and more secure. It opens smoother, and is easier to open and close. These are very subjective things and your mileage may vary.
Cutting? The Manix has a thinner blade and a more acute out of the box edge profile. The SNG/SMF is thicker and has a more obtuse edge. You can reprofile either knife to make the Strider cut more like the Manix, or the Manix be more robust like the Strider. The Strider blade will always be thicker (stronger) and the Manix blade will always be thinner (better for cutting). I have had no problems with my SMF cutting anything. I have had no problems with my Manix not being strong enough. Seems both schools get the job done as they cut well enough and are strong enough.
Quality control? I do not doubt people have had problems with Striders. But I have not. I have handled a few Striders and own one, and none of them had functional issues. From what *I* have seen, their QC is as good as Spyderco, or Benchmade. The issue is that they cost more and should have better QC since they are built with more human eyes and hands on them. However, from what *I* have seen (and YMMV), Striders are built just as well if not better than brands like Spyderco, BM, and Kershaw. And those brands get a lot of praise. Yes, there is a price difference, but if you feel the QC of Spyderco is good enough, then Strider is good enough. You just have to accept that the extra money you pay for a Strider is not going to quality control. If that means it isn't worth it, that is your decision.
Mick is a jerk? Maybe, maybe not. I am sure some people like him, and some hate him. Some like me, and some hate me as well. I understand the stance of those that will not buy his knives because they feel he is a liar. But I feel that judging someone as a person is too complex to be done using internet arguements, even if the court gets involved. Would I rather buy a knife made by Abe Lincoln than Adolf Hitler? Damn right. But I do not think I know enough about Mick Strider to say he is too bad of a person to buy a knife from. Maybe Sal Glesser has deep, dark secrets? Maybe Mick is a good person at heart (maybe even better at heart than Sal?) that has made a lot of bad mistakes? Of course, if I had to guess, based on what I have seen about Sal, and seen about Mick, that Sal is a great person and Mick is shady. But I don't really know for sure. Sal acts like a really stand-up guy on this forum, but I don't really know him inside and out. Mick may have lied about his past and can be a bit of a loudmouth, but I know I can come off as a jerk online, yet I act totally different in real life. I have lied before, too, and I am sure Sal has as well. People are too complex to judge based on the drama and rumors of the "knife world". I have known people very good at heart that have anger problems, insult others, and lie as a survival mechanism that comes from rough circumstances during their childhood. I also know people that act very good, honest, and kind, yet are pure evil on the inside.
Now before anyone sues me for insulting Sal, I am just using him as an example because I used the Manix as an example (because it is so often cited as a cheaper alternative to a Strider), and because he *IS* such a great person on these forums.
I do not think Sal has dark secrets, or only acts like a good person but is evil on the inside. I think he is great. But you never really know for sure. So I buy knives I like instead of conducting decades of research into someone's life to decide whether they are "good" enough for me to buy something of theirs.