best preamp under 4000 to match 4b sst

Ok, i have just bought a Bryston 4b sst after getting a good deal at my dealer. I had started a thread earlier this week and i was told to get my amp first. So thats what i did. So now im looking for a great preamp to match up My 4b sst. I was suggest a simaudio p5.3. Any other suggestions?