I've had good luck with the TireGard TPMS. It's nice to be able to read the pressure and temperature as you ride. Batteries in the senders last over a year, and are very easy to replace. The receiver battery doesn't last quite as long in my experience but it is even easier to replace.

I would only install these on metal valve stems. The senders are big enough that I'd worry about damage to the rubber part of the OEM stems.