Bristol GS has the best reputation. Those in the know both fixed-wing and heli have gone.
Risky attending a newish ground school, like being a guinea pig really. Not the wisest. Your choice though.
Find out the experience of the instructors at Dragon, if they have plenty of CPL experience go for it.
If not I'd be wary. Bristol guys, ie Alex Whittingham have years of experience, do it day in day out. They know it like the back of their hand. Makes sense, lots of 'bang for yer buck!'
You might as well get all the exams done, most of the hard ones have to be done for the CPL anyway.
Hope this puts you in the picture.
