I would absolutely boost again. I went with an easy setup (Sprintex 210), on E85 flexfuel, with a moto-east tune. I did the install myself, and haven't had a single issue in 30k miles.
I'm likely only making 275-285whp depending on temperature, but that is plenty, especially when you consider that I don't track the car or have amazing roads in rural Indiana. I get to have a bit of fun here and there, and plenty of scream/whine from the SC!
My entire cost of boost for me sits at $2950 (used SC, oil, tune, flexfuel). Amazing value, none of the mess that folks with big power complain over!
... I was a bit scared to post, as now I'll probably throw a rod tomorrow morning. But let's hope everything stays healthy!