For an affordable buck, you are going to get 420HC stainless steel. I don't personally own a 420HC stainless blade, but from what I have read on here, Buck is very good at working with this steel, and they know how to heat treat it and use it to make good knives. I think of it as a great option if you don't want to spend a lot of money.
People also really like Mora's sandvik stainless. I have a mora stainless blade that I use for food prep, and it is very easy to sharpen and to get very sharp. I can't say it holds an edge all that well, but that is to be expected of an affordable stainless steel.
Since I have heard that Buck's 420HC holds a great edge, I would give a buck like the buck lite a try over something like a mora 2000 (these are somewhat similar in price from what I have seen). The cheaper stainless moras obviously have an edge in terms of low price, however. So, when I recently wanted a cheap stainless knife, I bought a mora 7-- (the stainless brother of the 711 ... can't remember the number off hand). I haven't used it yet, but it looks very nice.
But so far I have just talked stainless steels. For general use where I don't have some specific need for a rust resistant steel, I would pick a nice carbon steel mora over all of these. I have a clipper, and I really like the way its 1095 steel sharpens up and cuts. It feels very sturdy for such a cheap knife.
I recently 'upgraded' to a mora 711 and 911 ... they have bigger handles that I like and have a more beefy blade and tang. I also got the smaller 511 since I was ordering. It also has a longer tang. I haven't given them a try yet, but they feel and look great. I personally prefer the 711.