Emu XL-7 & MP-7 User's Group

Me again...  Might as well get all my questions out there while the
going is good...

I'm lookin to warm up the sound in my studio.  Can anybody recommend a
(cheap) 2 channel tube pre for me?  I've seen stuff from ART and
Behringer that looks interesting.  I've had some bad luck with
Behringer lately, so some feedback about some of their products would
help.

I'm looking at the TUBE ULTRAFEX T1954 specifically, along with
products from other manufacturers with similar specs / results.

Extra points for portability.

Thanks

sapo