another shopping question

This one is less cool than an iphone but maybe you folks can help. I want to get a new small 12″ notebook computer. It is mostly for PowerPoint so I don’t need a lot of horsepower. (My main computers are my desktops.) Portability and long battery life are my main criteria. I use Windows. I’d decided to get a DellD430 which meets my specs. However, user reviews say it runs very hot. Very very hot. As I know how hot a Dell laptop can run, having long owned one that burns my legs, and being related to another that burns itself up periodically, this is leading me to rethink. Would I be happier with a thinkpad? Any advice? (PS, my old Dell held up great for a long time, despite burning my legs)