I'm looking into MBA programs in France and the UK as well and asked some advice from a couple of friends, one from France and one from the UK.
My French friend indicated that EDHEC was a good school (a solid 4th place after HEC Parkis, ESSEC, and ESC Paris). She did not have many good things to say about any of the other schools in the outlying provinces.
My British friend wasn't sure, but didn't think that the Aston business school was particularly good.
A caveat - I asked them for the best schools, so EM Lyon and Aston might be fine, just not as good as EDHEC and Esade.
All this said, you should go where you think you would gain the best education based on your career goals post MBA, in a city that you think you will enjoy, and to a school at which you feel comfortable and happy when you visit. All this coming from somebody who is still struggling through the MBA program selection process