I really like the convenience of Hegel H190v. How would you describe it sound? I like a more analytical and neutral sounding with a slight edge on the warm side.
If I was you I’d go for the H390 as it’s a better sounding amp and has a much better DAC than the H190, so considering both those things in your situation I think the H390 is very worth paying up for and can be found used right around the top of your budget. I also think it will provide significant improvements over your current separates. Here’s a good review that may give you a better idea of its sound characteristics in case you haven’t seen it. Hope this helps, and best of luck.