Telescopes. Question...?

Hey people. What Telescope should I get out of these telescopes: "Celestron NexStar 127 SLT Telescope" "SkyWatcher Skymax 127 SynScan AZ GOTO 127mm Maksutov Cassegrain Telescope" "Orion SkyQuest XT8 Classic Dobsonian Telescope 8 inches" "Skywatcher Skyliner 200P dobsonian" What I mainly want to look at in the night sky is, Planets and stars. Especially Planet mars! I am crazy about planet mars.