They tend to suffer from dew and require heaters or shields to keep dew of the corrector plate.
SCTs and MCTs.  Schmidt Cassegrain and Maksutove Cassegrain telescopes use a lens element (corrector plate) and mirrors to pack a lot of aperture into a small foot print.  These telescopes are excellent but out of your price range.  They tend to suffer from dew and require heaters or shields to keep dew of the corrector plate.   They can be good beginner telescopes.