Hi Wolfthun.
They're 2 pretty good choices to start with. The 10" will always be better due to increased aperture allowing you to see fainter stuff, however the EQ6 is bigger and heavier, and the 10" OTA is longer, wider and heavier.
If you're not worried about transportation (around your back yard, in your car, etc), then go for the bigger!
The GOTO on the EQ5 is also great, but you can add that to the EQ6 as well.
Speak to Steve Massey at
MyAstroShop, as he sells SkyWatcher gear at great prices, and he's a very knowledgeable bloke!
Keep asking questions if you're unsure about something! Look forward to hearing your next step.
to IceInSpace!