I have been carrying a Rat2 in D2 steel, and I have to say I really like it. Initially I thought is on he big side, but it is easy to fit in my watch pocket on my 511 pants.
It really stays sharp, and I have yet to stone it. I have stropped it a few times, and it is maintains an edge. Not chips so far. And because it was 40 bucks, I don't baby it, or really care if I lose it.
I agree it is a great bang for the buck, and still consumable at the price point.