Cheers Brendan, I appreciate the help. So Bintel isn't a good brand? I didn't really understand about it focusing without chopping the tube etc...
I'm now not sure whether to just go the 12" or get a 10" but I'm considering and thinking I'll probably want something else down the track for imaging alone so I can still take in the sights. I think I've been pretty set on the 12" for awhile haha.