WARNING...WARNING..WARNING Will Robinson........ Old Tires can and WILL blowout and cause lots of problems and cost lots of money. I know this topic has been discussed at length, but for anybody ...
As near as I can tell there is very little difference. The key is self replaceable batteries in the sensors and a rechargeable monitor. In my experience getting them programmed and installed so they do not cause a problem are the only issues and most of the early problems seem to have been licked.
I would not worry about a flow through sensor, one more thing to go wrong and with my installation removal to air up the tire is as simple as removing a cap.