Welcome to IIS novice!
Yep. 6 OR 8" Dobs are by far the best choices in scopes in/near that price range. The 8" is well worth the few extra dollars for loads more aperture, better focuser, finder and 2 more EPs. (Just make sure they
are GSOs and stay away from the shortest focal lengths which are not very usable.)
Darren's link above should be:
http://www.andrewscom.com.au/site-section-10.htm
Then click on Guan Sheng and look for Dobsonians.
btw. What will we do about your login name in a year's time when you've become an expert?