gandy wrote on Aug 30^th, 2012 at 8:02am:

£The next major update of prepar3d has already happened, we are on v1.4, some independent tests showed it was "up to" 85% faster than fsx ( Please remember performance is down to the hardware you have so i would expect less on older machines ) , I run all the CS aircraft i own on p3d 1.4 now.

I Didn't even know that 1.4 was out yet. Thanks for that. ;D
I downloaded it last night and have just finished installing it this afternoon and so I'm doing a flight in the Mooney Bravo out of Norfolk Intl. Looks like a nice improvement over v1.3 so far. That new Mooney Acclaim looks very nice too. ;)