One thing about a krell ksa100, you won't lose much money if you decide to trade it out in the future. they seem to hold their value like those old levinson amps and somebody always wants the old classics. I use one for my bass on a bi-amp system and they're a battleship for sure as well as reliable. Plus, krell has a good customer service dept. and will repair them should trouble arise. These days, I don't buy anything from a high end audio company unless they've been around 10 years--after getting screwed a few times by these guys going under years ago and get put in a bind just because you're looking for a 3% sonic improvement. You've already narrowed it down quite well.
