I know you have it now (AC15) but if i were faced with the choice of:
a) paying my annual subscription to upgrade to 15
b) upgrading my hardware
I would pick B - you would get waaaay more performance increase out of that than any new feature, particularly as you are on PC and so AC14 is already 64-bit
(we Mac users kinda need 15 for that alone)
os
cheers,
Owen Sharp
Design Technology Manager
fjmt | francis-jones morehen thorp
iMac 27" i7 2.93Ghz | 32GB RAM | OS 10.10 | Since AC5