I honestly don't see where the TMS, Dinan, or Active Autowereke software are gonna differ a whole lot. Keep in mind that regardless of whom you purchase software from, it's all doing the same thing (changes to the stoichiometric ratio, timing, etc.). I would be willing to bet, that they are all very similar chips, merely the cars they put them on may differ (condition of the engine, other mods on the car, quality of fuel run on that particular dyno day, etc. etc.).
I bought my software from Active Autowerke just because, they were the only autohaus willing to work with me, and build software beyond the standard off-the-shelf stuff. Dinan and TMS wouldn't. But I'm sure any one of the three off-the-shelf chips are terribly similar.
As for intakes, unless your looking at the full CAI (the down tube extends into the fender well) I would probably just replace with a drop-in K&N or Green filter. I just don't see the logic in the short ram intakes....the stock box isn't that bad of a design.