I own vehicles with both monitoring systems and I personally prefer the one run off the ABS wheel speed sensors. It’s simpler and has worked fine for me with never a false alarm (although, these are GM vehicles).
It does not indicate which tire is low, but with any tire alert, all tires should be checked and adjusted anyhow.
Problems with sensors in the tires are the expense of the ultimate replacement of each transmitter when the battery is depleted and many systems require resetting tire locations when tires are rotated. Additionally, many of these systems aren’t reset and give a driver a wrong low tire location.
I’m not looking for any extra complications and expenses. I think the system that utilizes the already installed and functioning ABS wheel speed sensor is genius.
CSA