Krell or Anthem ???

Matter of fact, I really like my present amplify 180wpc Anthem A5. It's very liable, I use it mainly for both HT and 2-ch with no problem what so ever. But the bug is scratching my butt. Since I love 2-ch so much, I want more power for the TWO front speakers. An audio buddy of mine (very experienced gent) highly suggested NOT getting the top line 325wpc Anthem P5. “Go for a USED Krell”, he said.

I have collected and read many articles but I need inputs from the "real world" people, ones that already have had/used Krells. This thread is very specific but still, my apology is out if it's double posted.

1/ Please point out ALL differences between these two old Krell KAV-2250 and KSA-250? I'd like to know evthing about them, literally. (thanks, I already have specs from Krellonline.com)

2/ Can both of these Krells out-perform my 180wpc Anthem A5 in dynamic and sound quality?

3/ Can they also top out the flagship Anthem 325wpc model P5?
Fact: In paper, the P5 has much "beautiful" chart and numbers than the Krell's.

4/ Is it true that the 2-ch Krell KAV-2250 will have more effort/juice to push than its sister 3-ch KAV-3250 even both have same power output?

PM is welcome,

Greatly appreciated.