Many people seem to like the flow thru type sensor. I'm not sure why some feel the need to be adding or bleeding off air. If you know the minimum air pressure you need based on actual individual load confirmation and then add 10% margin (not exceeding the wheel max pressure rating) you should be able to go for many months before needing to add 3 to 5 psi.
If you are loosing more than 2% per month there is something wrong as in a valve leak or small puncture.
Tire pressure will change with tire temperature at about 2% per 10°F but the only pressure need to be concerned about is the minimum when the tires have not been warmed by driving on them or being in the sun.
I did write a blog post on "Best TPMS
" but I only identified features I believe you need to consider and did not and will not identify a specific brand or model as what might be best for me may not be best for your application.
I write a blog on RV tire application and safety. RVTireSafety.com
Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV