I absolutely agree with the last post, it's essentialy to get out and use your gear so that you A): Know it works and B): Know how it works.
When it comes to knives and tools, like anything else out there, some products are good and some are bad. I personally like my SOG products but I was picky about which ones I bought and have extensively used all of them to make sure they suit my needs. Cold Steel is a pretty safe bet but often must be ordered online (at least in my area, I don't see a lot of Cold Steel products at my sporting good stores). KaBar (spelling, Ronin?) is a good brand overall with a few quirky products. SOG has a few things I wouldn't use but personally I like their Fasthawk and Voodoo Hawk. There are people here who would disagree with me on the 'hawks but like I said, I went out "into the field" and made sure for myself that they were right for me before permanently adding either one to my kits.
RoninSensei is an excellent resource on these forums when it comes to bladed tools and weapons, I'm sure he'll chime in again soon haha.