Wow, you guys have been so cooperative, I'm really glad I started this thread. First time I get so many replies! I guess people really feel strongly about these two excellent knives, and with good reason.
Arguments for or against have been rock-solid. I'm aware that most people favor the BM 710, yet I really admire that those who defend it also criticized its blade-shape or sharpness out of the box. Now THAT's constructive criticism. Point out the positives and negatives, even if you are in favor of that knife. Same with Starmate arguments which, even if few were made in favor of it, were extremely helpful and well-informed.
I must admit, that I was always thinking of getting the Starmate until I discovered the BM 710. What can you say? Excellent handle, nice blade shape, slightly longer and of course the ever-dependable axis lock. HOWEVER, I ended up choosing the Starmate for several reasons.
First, many of you pointed out some quality problems with the BM right out of the box: blade sharpness and grinding. These seem to be some quality problems that BM faces at its factory, and I like my knives to be perfect out of the box. For example, ralph(ralphtt) stated:
***Sold the 710 because of the lousy blade grinds. Still wasn't really sharp even after being returned to Benchmade for re-sharpening. No problem with the Starmate. Came sharp and no cosmetic or other quality problems which are so evident with some recent Benchmade production. If you do buy a 710, ask the dealer to closely inspect it for you. Even then, you run a risk of having to return it to get a quality product. JMHO.***
Maybe Spyderco has faced these problems too, but so far their track record has been perfect with my knives. For me, overall quality out of the box is of paramount importance, and have no desire to send it back to production for whatever reason. I find ludicrous the fact that I would have to put some "elbow grease", as J D Wijbenga put it, to a knife which is supposed to be in pristine condition.
Second, I must say that the Spyderco looks like it will be more comfortable in my pocket than the BM, since its handle is flatter. Pocket-comfort for me is a must. I must admit that I prefer BM's lower-carry, but in the end I guess I don't mind it as much.
Third, I sincerely like CMP440V a bit better than ATS-34, due to its more corrosion-resistant ability and easier sharpening. I'm not really keen on M-2 knives, since even if their toughness is getting to be quite legendary, their corrosion resistance is low, and I live on an island (Puerto Rico) where salty environment situations could come up. I just really would rather not worry about coating problems and prefer a more traditional "stainless" steel. Also, when it comes to Spyderco knives, I really don't have to worry about knife-edges being and staying hair-popping sharp.
The lock issue, of course, is the most controversial. Why choose a linerlock, which is more prone to failure and obviously less strong than an Axis lock? I'll admit that the Starmate fails here. However, I trust Spyderco liner-locks...best made in the business, from what I've gathered, and I've handled them myself and sincerely doubt that the knife will fail on me through normal or even tough use.
Looking at the knives side-by-side on the internet is a very tortuous task. They are both so pretty, look so competent. I think I will eventually "upgrade" to an axis lock. Personally, I like the aesthetics on the Starmate over the BM, but the BM is definitely on the top of my list for future purchases. I'm not undermining it...I'm just saying that, as a purchase I would make in the present, the Starmate just "feels right" at the moment. Plus, this could be a compliment to the BM, since I respect it enough to be sure to acquire it in the future. Just picture it...first Starmate, then BM Axis, and finally Sebenza!(I've always said, a man can dream, can't he?)
Thank you all very much. Your help has been nothing short of amazing.
-Flood