Opinions For Intergrated Amp on B&W 803n

Probably a well asked question but need to find a good integrated for my new "used" B&W 803n. Looking at Bel Canto S300iu, Krell 300i and Krell 400xi. Thought on these as well as others are appreciated. I need to keep it under 2k used closer to $1,500 is better.