IBM Thinkpad X40 (Score 1)

I have an IBM Thinkpad X40 and it's great. I've got the extended life battery though, but I think it's well worth it. I haven't tried squeezing all the juice out of it, but without thinking about it at all, using it with full brightness, compiling some apps, doing some websurfing, I got four hours easily. It weighs about 1.4kg with the extended battery connected, so it's still very very portable. You don't get an optical drive with it though, but if you can either stand using an external one (I know it's no problem to me) or don't even need one, you'll be just fine.