resol,
Agreed that low profile tires are no more prone to excessive wear than what would be considered "normal" street tires.
However, it is fairly common for a high performance tire to have shorter tread life than an ordinary passenger car tire simply because the rubber compounds are much softer for the former compared to the latter.
Simply research the various types of tires on either
www.tirerack.com or
www.discounttiredirect.com & compare tread wear ratings. The higher the number, the longer the tread life.
For example, the Nitto NT-450 is a high performance tire yet it has one of the highest tread wear ratings (300) of any such tire, practically equal to most passenger car tires.
Other considerations are whether you want a dry weather high performance tire or an all-season tire as that will determine your selection, particularly regarding tread wear, traction & similar ratings.
I would also agree that for the money, a 17-inch combination would likely be your best bet. Since you currently have 15-inch OEM wheels & tires, a 17-inch combo would equal a Plus 2 upgrade.
The tire size you need to look for is a 215/45-17.
Or if you really wanted a 16-inch, Plus 1 combo, it would equate to either a 205/55-16 or 215/50-16 which are the (2) OEM offerings on the SVT model.