Hello and welcome Steph

I bought my AGP new in September 2009 and I can honestly say it's the best thing I've ever done.
The SS totally transforms the car and therefore I'd say if you can get an SS - do it.
I've used mine as a daily driver since new and it's never let me down in 58000 miles.
Maybe I'm biased but I don't think there's any cons.
Just buy one - you won't regret it!