It's odd that you imply that Gruber is one of the last hold-outs, and his change of heart finally shows that 7" is better. I still prefer the 10" form factor, and while I never knew Gruber was my last celebrity proponent, I can't say I care.
I prefer the 10" Retina because it beautifully renders scientific papers in their native PDF format, and with Papers 2, the IT of research verges on genuinely pleasant.
