Thermostat for radiant in floor heat

Any recomindations for a thermostat for infloor radiant pex . I am thinking of doing a 1/2 bath and laundry room after I install new floors. All the choices with outdoor and indoor sensors, programmable, etc. The rooms I may do are overtop of a crawl space, and the 1/2 only has hot air now as long as the door is left open, but it does have electric baseboard, but I'm not going there If it works well, I may convert the rest of the house as time allows. Is their some type of central unit with individule room sensors ?

Also, what type of controls used, manifolds, actuators, thermostatic or manual mixing valves, multi speed pumps, indoor slab sensors, outdoor sensors. Their is alot out their, but whatis the best bang for the buck? Do you see wider temp swings from summer to winter or adjust the mixer temp to compensate ?

This subject could go on forever. KEEP IT SIMPLE.
I have the same thermistat in each room, and crawl space, some control hydronic baseboard, and one controls a concrete slab.
The slab has a mixing valve to limit the water tremperature into the slab to about 100 degrees, all seams to work good.
I have one main pump, and five zone valves, and one pump on the mixing valve for the slab, that system being fed from one of the zone valves.
My honywell thermistats have somthing called a heat anticipater in them, you can read upon that.
I read a book on the subject, and you can complicate these systems beyond belief.

I kept mine very simple. I have infloor heat in my kitchen, dining room, entryway (which are all more or less one big room) and the bathroom in a different part of the house. I have one "slabstat" in the dining room. (A sensor in the floor) It simply keeps the floor at the same temperature all the time. I have one mixing valve that keeps all the infloor water the same temp....in my case about 140. I have ball valves to I can slow down parts of it if need be. With a little tweaking I have it so the bathroom stays warmer. I haven't touched those valves in 17 years. The reason I went for the slab stat is that the rest of the house is how water baseboard. If I had put the infloor on a wall thermostat, the baseboard would heat that area before the infloor could catch up. I do have a switch in the kitchen that will turn the infloor off. On sunny days we will get some override. We have learned that if it's sunny at breakfast we flip the stitch to off. Works for us!

I will try a sample of tarpaper and wood floor with a heat lamp below first to see if it will give off an odor. I have some old and new tarpaper thru out the house. Any thought on this ? I'm still in the thinking stage

From what I have seen...
Tarpaper should be avoided due to the possibbility of odor...