While I like the InTUne, 20HP gain is a bit under what the Predator does.
I got 25hp gain with mine, (same year/model as your Romeo), with a CAI, and a Catback exhaust I went from the stock 370 HP in our engine to over 423HP. THats SRT level. In fact I have eaten some SRT's up because of the tuning with it, % boost, WOT boost, Im actually pushing out 430HP from the engine, along with shift firmness, etc. I see nothing on the Diablo Sports Predator site saying they are discontinuing it at all. The one thing the InTunes does have is the much easier updating of the tool. Won't argue that. But for HP gain out of the box, the Predator has it beat. your call. EItherway it is DEFINITELY one of the big 3 upgrades that should come first for performance.