I admittedly don't use Google+ for much anymore except to back up my cell phone photos, but the fact that they automatically added a "twinkle" effect on my picture of Undie Kermit topping the Christmas tree is pretty awesome. +1 for Google+. :)
Just the opposite here. I deleted my Facebook account a long time ago (even block access to the facebook.com and fb.me domains on my network). And rarely check in on Twitter. G+ gets virtually all of my attention in the "social" realm.