I agree with the above - the 4311 would be an almost ideal choice. I own the 4311 and it will provide you with what you are asking and you should be able to find it on the street for $1500 or less (at least it was available at that price a year ago when I bought mine).

Key features for you:
- Newer version of your 3808 so you'll be familiar with it's usage & features
- True 11.2 channel support (with external amplification for two channels as it only has 9 amplified channels)
- Pre Amp mode which allows you to bypass the internal amps for full external amplification. NOTE: simply bypasses the amps and doesn't necessarily shut them off so it doesn't quite behave like a dedicated pre/pro
- Audyssey MutltEQ XT32 (includes SUB EQ XT) - provides dual sub calibration. NOTE: you need to take 8 measurements, not 32. 32 measurements are only taken if you purchase the professional Audyssey installer kit & software, which is probably a bit of overkill - but is possible with the 4311 as it`s compatible with the pro kit

Overall it`s a great product and highly recommended.