$300 used preamp to match my rotel?

I bought a Rotel RB980BX power amp and now I'm shopping for a used preamp for $300 or less that would work well with it. I suppose Rotel is the obvious choice, but thought I'd check in to see other suggestions. I run two channel stereo for audio and AV signals. My sources are: cd player, dvd player, wireless itunes audio, TV. Obviously I can wire the video outside of the preamp. Some things I've considered:

-- used rotel pre
-- used rotel pro logic surround unit. These are very inexpensive, can run a sub one day and offer video. Any thoughts as to their 2 channel quality?
-- used tube or other brand pre.

I'll be running them through some DIY 2 way speakers.

thanks

Steve