The only one I have is the 881. That's the mini version of the first Buck/Strider collab (looks sorta like a small AR?). I don't compare it to a Strider, I just think of it as a high-end Buck. It's really quite a solid knife. The liners are thick so the liner lock has plenty of meat to it, the ATS34 blade is nicely ground (although very thick), centered when closed and solid when open. The F&F was very good for a utility type knife.
I really like the one I have. They're disco'd now, but when I find an 880 FS or FT that's in good shape, I'll try to pick it up so I have a set of them.
I've also had several Striders. They were also nice knives, but I didn't keep any of them.