I was looking to replace an NAD C275 power amp from 2008 just to see if I could improve on it. I had already bought a Topping Pre90 over a year ago and felt it sounded better than what it replaced.
I considered a typical higher-power class AB amp like a Parasound A21+, but it was kind of bigger, heavier, and hotter than I wanted.
I thought about class D amps but just never liked the idea of the ultrasonic noise generated.
I was impressed with reviews of Benchmark's AHB2 and didn't see any negatives, so I splurged and bought a pair. It turns out that just one would have been fine. I'm happy with my system now and don't have any more thoughts about what's next.