So I took the advice and farmed - I did 2 paragon levels reasonably quickly (1 per farming run almost), then posted in general chat asking for some tips. Some crazily geared out Barbarian carried me to a hellfire ring, and just those three uber bosses got me two more paragaon levels. The drops were good too - I got Lacuna Prowlers (the bracer), and some barbarian only set piece that looks awesome. In short, the drops seem way better to me than when I used to farm when I first hit level 60.
Hoping to hit paragon 100 before the expansion, and to up my gear a bit too.
I'm using electorcute/venom hydra as a wizard with 35k dps and around 27k hp. Could any wizards suggest a better build? I have to kite, use the illusions, and hope mobs land on the venom pools, but I have trouble with those mortar elites, because I continuously have to move to avoid getting hit and then the venom pooling doesn't work.