Amp for Nautilus 801

Any nautilus owner out there help me selecting an amp for my Nautilus 801!
The options I ve got are:
Mark Levinson No. 333
Krell MDA 300
Conrad Johnson Premier 12
Bryston 7B.
My music preference is Jazz and classical,occassionally pop.For pre amp I am using Casablanca II.Any suggestion will be of great help.
thanks
AAK