from what I can tell reading another well established and well trafficked forum
Pressure Pro has been around a long time and has a good following, good customer svc, etc...
and
pretty much all the others are ok too.
I went with a system from TST
Truck System Technologies
I like it just fine. Seems to work, but I haven't had a real alarm situation to prove it.... knock on wood
I liked the look of the interface better, and the receiver display is nice and small. I was able to find a nice place to mount it on the dash.
I went with the flow through sensors with user replaceable batteries
I've second guessed taht a few times, and think that I might should have gone with the factory replaceable batteries for longer life. I have a feeling it will seem like I have to change the batteries often.... I haven't had it long enough to need that yet, but i figure it might be close by the time I use the coach next.
I have bought rigid valve extenders to get the inner rear transmitters more accessible, thinking that when i know I'm parking it for a while I'll just get into the habit of removing them all to extend the battery life....
My coach is 32 ft class C and I don't need a signal repeater, but I understand some of the longer RV's might especially if you include a toad's tires. This I think is true for all of them.