After reading and reading then reading some more, then playing with a Pressure Pro, I finally made a decision. I was down to 2 companies: Pressure Pro and TST.
Our neighbor let me play with his old Pressure Pro TPMS, it was 7 years old and some sensors no longer worked. But it did me a chance to try one out.
Monitor size was OK, very flat and wide and would fit well on my Dutch Star dash. Programing was simple and took no time at all. It would have needed a repeater for our coach. I even tried rotating sensors to eliminate a sensor problem.
Display was very easy to read from any angle, or distance.
What I didn't like: You have to scroll through to read the tire pressure, didn't auto scroll. No temperature readout. It monitored the temp just didn't display it. I prefer to have all information available and I'll decide what is relevant to me.
For what it was going to cost to replace existing sensors, plus add sensors and repeater for our coach and toad, it was the same as buying a TST.
So that's what I did.
Got the 507 with 8 flow through and 4 standard caps, plus repeater. I ordered before we left St. Louis to head home for a week, knowing I'd be able to hook it all up before the return trip.
UPS decided it was so cool they would keep it a every stop between Atlanta Ga and Rapid City SD for a full 24 hours. So I didn't get it till Thursday afternoon, needing to leave Friday morning.
Repeater back ordered .
Install: Even easier then Pressure Pro, did think that was possible.
Monitor size: While thicker then PP it was much narrower. Still fitting the DS dash just fine.
Readability: Not as good as PP. PP used glowing red display, TST is like a digital watch. Fine head on and within a couple of feet, no good at sharp angle. Like below eye level on dash. It is back lit, so easy to read in the dark.
Because I didn't have a repeater it needed to ride on the counter in the kitchen to keep from loosing sensors. Made for a good chance to try the built in battery. It was good for 10 days straight before needing recharged.
While on the road I watched it scroll through the tires while I ate breakfast. No muss no fuss, no problem.
While back in St. Louis I took the monitor a long in the Jeep with me. Every night the sensor on the right rear of the Jeep would set off the low pressure alarm. Every morning I would have to add air, sensor and gauge read the same. It was a slow leak 10 psi over 24 hours, the type that drives you nuts. Turns out there was a nail buried in one of the tread blocks. Tire patched life is good.
Once I got the repeater I finally got everything hard mounted in. Here's how it looks.
Monitor wiring (came with plug in or hard wire) got hooked up to the unused passenger power shade wiring in the dash.
I took apart their table mount and stole the medal bracket, added 2 sided tape and attached it to the top of the back up monitor.
Looking at different locations for the repeater, I settled on right outside of the fan control in the rear bathroom. No drilling to get to wiring.
Wired the repeater into the fans main power supply by opening the connecters and placing the end of repeater harness along side fan wires. You can see how fine the repeater harness is.