I can't say much for the other clubs in the area, as i've never flown with or visited them, but i'm currently training with Wellesbourne Aviation and as pj-hypersonic says, they are a very good training organisation, I can't recommend them enough. Exceptionally good instructors with a very high level of teaching, very nice fleet of aircraft (4 x Robin HR200, 1 x Robin 2160, 3 x PA28 Warrior, 1 x Piper Arrow). The club itself has a professional, organised and unified atmosphere to it whilst at the same time still being friendly and welcoming. Finally, the prices are also very good, have a look at their frequent flyer scheme.
Just one thing: If you do decide to fly at Wellesbourne Aviation, make sure you get plenty of slots booked in advanced, it is extremely popular!
Ox