yea from all the pople ive mentioned these managments too, they seem too be highly recomended. ive gone through the spec lists on all 3. atom seems too be the basic, but from a tuners aspect perfect for the job, storm are meant too be the spot on. if you want the extras like launch control etc. an obviosly the extreme seems too be the muts nuts of the lot.
but the storm seems too be the one i would choose. plus i belive the extreme is about £1500 without any fitting an mapping lol.