Leeds1972
It's all about what
you're comfortable with. It's your money.
At this stage, I wouldn't even think about the ATPL, you're just starting your PPL, without wanting to put you off, if it's for you, you've got a mountain to climb mate! Don't look too far ahead, the size of that mountain might just put you off!!!
IMHO for what it's worth, i'd go to Sherburn; it's small and personal, good CAA AME on site, awesome in the summer sat outside and lots of social events - having fun is what the PPL is all about, loads of time to learn large controlled airports (which isn't exactly a science by the way, few more frequencies, longer taxi and more time at the holding point - just means more hassel!) and if you want to go on to ATPL study levels, I personally think you should experience that fun before the serious stuff starts!
I did my PPL at Sherburn in 1995 and make a point of going back. I now fly a B757/B767 from a large London Airport, and Sherburn is just as cool...