These are two very different beasts, but both great in their own ways (so a nice situation to be in). Detica have achieved brisk growth throughout the downturn and are expected to carry on expanding at a pretty aggressive rate - which as you imply is certainly a situation conducive to career progression and "making a name" for yourself.PA Consulting is a much more widely known brand name, which could be a consideration if you see this as being just a stepping stone onto something else. The firm is something like 10 times the size of Detica in terms of headcount, so clearly that has implications (good and bad) in terms of training, culture and the like.I know people at both though, neither one would be a poor career move...