Well, I'm personally going to wait for Jim's Shark Injector before I get my upgrade. If history is any indicator, Jim will come out with a software flash that is on par or better than the Dinan, but at a much better price. Also, the installation is virtually dummy proof. Just plug it into your OBD-II port and press a button. Takes like 15 mins to reprogram the car, plus you can return it to stock just as quickly.
I'm not looking for the fastest or most powerful tune though, just a healthy increase in power and drivability without sacrificing engine longevity too much. If you're looking for all out power, you're probably better off getting a Procede V3 or JuiceBox 3, or something like that.