Need Amp Advice for my new setup: B&W 686's + Pioneer PD-D6-J CD Player

[Simba]

Hi all!

ok im kinda going nuts now having looked at soooooo many amps....and probably worst of all not heard any of them lol, but as a starter i need advice to filter out anything i shouldnt be looking at

Heres the kit list i have:

Speakers: B&W 686's
Stands: Partington Super Dreadnoughts
CD/SACD Player: Pioneer PD-D6-J

Amps:
On offer to me is a 2nd hand Pioneer A-A9-J amp for £390
Arcam DiVA A90 £499 New
Rotel RA-06 Ex Display £400 7oaks
Cyrus 6vs2 Ex Display £450 7oaks

thanks

simba