congrats on the new 991... i switched from an m3 to a Pcar as well a few months ago. too bad it isnt a minty fresh 991 but i am happy with my switch. the Pcar is so much more responsive than the m3... i have yet to drive an 991 but all the reviews of it are very positive. maybe a 991 GT3 for me one day....
Current: 2013 F10 M5 & 2013 GLK350
997.1 GT3RS (gone)
2009 WRX STI (gone)
e92 M3 (gone)