The Ampeg bass amp that suits you the best seems to always be a safe recommendation.
For $1000 you have a lot of excellent choices, especially if you do not rule out clean used gear. There is nothing wrong with late model used gear in excellent to mint condition, and is my first preference when seeking value in electronic gear purchases. A couple of choices that nobody has mentioned is the new Peavey BAM 2x10 combo that you can pick up for around $1000 and has received excellent reviews. I once developed a prejudice against Peavey bass amps, but it was because I bought a folded horn cabinet instead of the correct cabinet for my situation. Reliability was never a problem with the Peavey amp I had (or any Peavey amp owned by anybody I ever met). I saw several Peavey amps in use in Russia, and Russian musicians demand high value for very little coin. I am personally interested in the new Phil Jones Bass 2x5 bassman's briefcase combo since I want a home practice combo with very easy portability, good tone, and battery operation as a standard feature. You can mike it up if the house PA system is of sufficiently high quality. I could also add a UPS with sine wave output to my homebrew 20 watt Marshall AVT20 1x10 combo with Eminence B105 bass driver. Don't forget a Sansamp RBI or Bass Driver DI for those situations where the house PA system is of high quality and you don't want to lug a heavy bass amp around. You can have a new Ampeg combo amp for home practice and small clubs and use the RBI or Bass Driver DI for big halls with a good PA system for under $1000, free youself from the slavery to large bass amps, and suffer almost no sound quality loss in the process (most of the time you will gain in sound quality over old classic bass amps). Geddy Lee uses the RBI in live concert situations.
