Ill be fitting my Link G3 XLEM at some point. I just have to get down to the place to have it fitted and mapped. Not the cheapest but more attractively priced than for the Motec M400.
LinkPlus G3 Engine Management System — Link Engine Management Systems - plug-in & wire-in aftermarket ECU's
I got mine from Rogue Motorsport though I think there are other sources. They do a fit and MAP price (NB only the normal non-VVT-i G3 is currently shown on their website). They're already running a red top on a Link XLEM also.