Go back to performance, get a set of Reynolds r4 46mm clinchers, they do 20% off every couple of weeks and they'll come I. Around 820 bucks. I don't think you'll get better quality for that price. I have a pair of them and they are stiff under my 195# body and come in around 220g lighter than then factory oval 527 and probably 450 lighter than the 327's if you got those instead. I have not a single complaint.

If you don't want to go over 800 at all, go with shimano rs81's. They weigh 1501g, dura ace 24mm carbon rim but use an ultegra 6800 hub instead of dura ace. No one complains about them either and I believe they usually go for 750.

My preference would be the Reynolds though by far.