just make sure you get a diagonal!
if you are 'frac man all good, but i'll throw a spanner in the air - for around the same price you could get a 14"-16" goto dob (from andrews). for visual aperture rules! these track great and the eyepiece will be easier on the back (not as much leaning over - although you have to move the buggers out to set up). otherwise a smaller goto dob may suit better (and save some cash for good eyepieces).
i'd suggest joining a local astronomy club and taking a look through an ed80-120 and a 14-16" dob and then decide
Cheers
Russ