You might want to try this link out if you are new to telescopes, or havent bought one in a while
Scope Review
You might consider a good used scope (yes there are some out there), because you can get more bang for your buck. Sky and Telescope is a good resource. Might try Astronomy and of course google for what is out there.
As NightFlyerGTI said, you get more inch per dollar in a Dobsonian than other types, but that is because there is no mount, or at least no equatorial mount. That makes it difficult to keep a small object, such as Saturn in view as the Earth rotates when you are looking at it with typical maginification. Just something to keep in mind. IMO, Dobs are much better for observation of diffuse nebulas at relatively low power. In this, apeture is paramount, and that is where they shine.
Refractors in this price range are unsatisfactory for most use unless you get a REAL bargan on a used one.
Newtonians offer relatively large apeture with an equatorial mount that works well.
Dobs can be good
Catadioptrics are a good compromise between reflectors and refractors, and that is what I have.
Again check out the link and if you have any questions PM me.