Gerber knives used to be well regarded, but about 10-15 years ago they started going for the low-cost segment of the market and their reputation has paid the price.
Most of their current line isn't all that great. At best, they are serviceable beaters IMO.
However, in the mud there are some gems. The good ones just cost more, think Benchmade street prices.
I've been playing with a Gerber 06 auto that is actually a pretty good knife. S30V steel, decent edge grind, fit is reasonable, locks tight, the anodizing seems good so far, a little slow firing though. Not as nice as a Microtech or Benchmade, but then it didn't cost as much.
Really, as Mr. Levine points out in his book, you really should go look and handle various makers knives, note the street prices for each, and compare. Get a "feel" for what can be done for what amount of money, etc.
The Gator knives are actually pretty nice for the street price. Some of them came with good steels - 154cm and ats-34 that actually seem to be heat treated well. Which versions do you have?
The LST is a fair knife for the street price, and preferrably on sale. Not my thing, though.
The Kiowa is a liner-lock, so I'd be careful there, since liner-locks in that price range have a nasty habit of failing during stabbing moves. I rarely buy liner-locks anymore.
I gather the newer models with the skeletonized blade have switched to crappier steel.
i even carried the thing daily for a year, serrations chewed anything i came across that needed cutting