I think an 8"F6 is a great compromise. Plenty of light grasp, easy to use, More forgiving on eyepieces then faster scopes (like a 10"f5 say). An acquaintance of mine has one and it is very good.
You will have to find something to look at other than planets though!
There are reviews on this site of similar products, and also on cloudynights.com
regards and welcome
