Best bang for buck integrated amp for $500


Looking for best bang for buck amp for under $ 500.  I have triangle Bro 2 speakers already and cables and a dac.  So just looking at a amp.  Something in the 50-100 watt range, slightly on warm side of neutral, good low end, all the good stuff.

Right now i own the Emotiva basx A-100 its not bad i paid $199 but i want to step up my game.  Im kinda looking at Cambridge audio AXR100, a couple of yamahas, but wide open to suggestions ?

Michael
128x128audiomike33
Just want to thank OP for starting this thread and those who have responded. 

As can happen in relationships, I can get in a rut. I am actually excited at the thought of changing my second system, or [gasp] changing up my main system. Marantz will always be a part of but not only.  Ummm... those speakers...and...

Feeling like I did when I started the journey all those years ago.
Well since I want a desktop solution and it's only between 2 amps the Rega Brio  and the PS audio sprout 100 and you can't get the sprout so the sprout is out I'm going with the Riga Brio and for $799.

I want to thank everybody for all your suggestions I'm sure there are loads of amps in here that are good that I'm missing but I can only choose one for now.
Brio is Class AB vs Sprout Class D. I would bet on the Brio for that reason alone. I have heard the Brio a few years back in Memphis and was very impressed b the sound for the money. If I was in the market for a mid level integrated it would be one of the top 3. 
IMHO the Rega IO is a much better sounding amp than the Brio. It punches way above its price point. You should touch base with JohnnyR at the Audio Connection