I'll just echo what others have said, having owned several of each.
If you're a nut for precision, F&F, and remarkably consistant perfection in a knife, the Sebenza will do it for you like few other knives can, often it seems that CRK can't turn out a flawed knife, Strider is a little different, less refined, not quite as consistant, but, if you do get a well made one, it can be a
very good knife, and many of them have surprisingly smooth, precise actions as well.
I'll put it another way, a Sebenza is one of the only knives, and this includes customs from even the best makers, that I'd feel pretty safe ordering/buying sight unseen, with a Strider, or any number of customs, I wouldn't feel quite as confident. In my experience, Sebenzas are the most consistantly perfect knife out there, and that's why I laugh when you invariably get people who whine that they're overpriced, no, they're not.
You may not like it however, once you use it, since ultimately, whether you really like a knife is based on more than F&F and precision, there are ergonomics, edge and blade design, looks/image, etc., and, as I said, there is most definitely something about the Striders, as another poster said, it's kind of like a Range Rover vs. a Hummer, the RR is more refined, luxurious and still a very capable off road vehicle, the Hummer isn't as refined, but if you're going to be driving through streams and on treacherous ground, its virtues are quickly realized.
But, don't for one minute think the Sebenza isn't a tough knife, it might be just as tough and reliable as a Strider, the difference is, Striders aside from actually
being tough, are designed to look and feel tough, something a lot of people, myself included, like. They have the look and feel of a heavy duty tool and let's face it, as guys, we like tools, don't we.

(Tim Allen grunting...)