Originally Posted by David Marseilles
Certainly pixel density is a different strokes for different folks thing. It's why I sent my Nook Tablet (160ish ppi) back to wait for this more than 6 months ago. It's not unreadable even to me, but it isn't comfortable either. When I moved from my 140ppi TX to my 260ppi TP2 (both were my primary reading devices), I was spoiled beyond repair.
I don't know for sure what my minimum pixel density for a tablet would be, but right now I'm shooting for 200+. The N7 has 215ppi.
Yes, I think the higher density will make a difference, but I don't think it needs to be >300dpi like iPad/iPhone. And given the tradeoff in terms of CPU/GPU power consumption I'd prefer it to be only as much as it needs to be so my eyes don't register any lack of smoothness at normal viewing distance, and no more than that.