I own a Peachtree Nova 300. It's a great sounding piece and well made. I used it with efficient Klipsch speakers, but it has enough power to drive almost any speakers. As mentioned, it is Class D so can be smaller and lighter.
I can't speak to either of the units you've mentioned, but I have owned a Parasound A23 amp. It was very neutral and had plenty of power for a 125 watt amp. I did eventually replace it with a Wyred 4 Sound Class D amp, which I felt was more detailed than the Parasound.
The specs on the Hint's amp look similar to the A23, with the Hint having a little more power. The Hint looks like a really nice piece. The feature set on the Nova 300 and Hint are pretty similar. I like the looks of the Peachtree a little better, the hint has balanced connections if that matters. Can you listen to both?