Pre/Pro assistance and advice needed

I am going to be selling my B&K Ref20 soon and will be needing a pre/pro to replace it. I would like to spend under $1400 on new/used components.

Here are my wants:
1) Analog bypass for good stereo listening.
2) DD 5.1/DTS/Possibly THX (not necessary)
I don't need video switching, DVD-Audio or SACD.

I know that the Ref20 has most of this but I want higher quality 2 channel sound.

I have considered:

Krell HTS
Classe SSP25
Aragon Soundstage
Bryston SP1

Any further suggestions would be great. I am mainly concerned with a good 2 channel analog bypass. I know all of these will offer a great HT experience.

Gurus of the 'Gon...come to my aid!