I have had good experiences with both Benchmade and Spyderco. I used to like the Benchmade line more, but have gravitated to other knives and makers like ZT over the years. I still have my Osborne 940 (great knife) and 551 Grip, but my others have been sold off. I think Spyderco is a bit more innovative as are some other companies today. Still the BM's are top notch, and a good value if purchased right. I currently only have a Manix II sprint run, and just acquired a Southard which I really like.
As others have said, you can't go wrong, and I'd throw Kershaw/ZT in there as well which right now I like a bit better. Between those three companies you have a lot of bases covered.