I've been following multiple battery related threads while trying to figure out which configuration to buy. There's great inconsistency based on individual usage, but I have noticed many more people complaining about lackluster battery on models with expanded RAM. I'm wondering (diagnostically) if there's a real and consistent pattern here, and if so, does it apply equally to the TB and nTB versions. The poll Q is for 13" models - comparing TB to nTB. Please be explicit with your configuation data in the comments.