I use the KAV-250a to power my fronts (Dynaudio Contour 3.0) and am very pleased with it. I'd consider a brand new one for $2000 an excellent purchase. It is somewhat "Krell Lite", but in a good way IMO - you get 99% of the Krell sound, including spectacular bass, but in a manageable package. It doesn't run as hot as the older class A Krells, one person can move it, it doesn't have the sharp heatsinks, you aren't required to install a dedicated circuit (though it always helps). You can always buy a full-blown Krell later. The KAV-250a was widely reviewed extremely positively.
I have no hands on experience with the Bryston, but you probably wouldn't go wrong with it either - built like a tank, 20 year warranty, etc. -Kirk