I find that the Suntouch matted system is the best value for my customers. Medium cost, medium response time, low labor to install. All systems are comparable as far as running costs. I dislike "loose wire" systems as the raw materials are cheaper but the labor to install them AND install over them is more expensive. The NuHeat system is the highest priced that I've seen, but you get a custom built mat and a quick response time with relatively low installation costs.
If you browse the WarmYourFloors website, you can find pricing for all of the above mentioned systems, a la carte or in kits.
Best of luck,
Shaughnn

We used Nu-Heat custom mats in our MB and hall bathroom. DH did the measurements/layout, and our tile guy installed them. Tile guy likes their mats, DH was impressed with their techs/cust svce when he made his initial call(s) to Nu-Heat, so that was that.

Had them "on" the past couple weeks since it started getting colder (they were installed in June and in August, so no need for them until now!). Nice!!!

I installed the Suntouch system in my new master bath. I chose the digital, programmable control. The only downside is that every time the power blips you have to reset everything on the control. Now that it's been freezing for half the day I've been tempted to use it. I think I'll set it tonight!

The installation wasn't too bad. About what I expected. The toughest part is making sure you don't nick the wires with the trowel when putting the mortar over it.

I have Warm Tiles Easy Heat with a programmable thermostat. I enjoy it a lot. Only downsides are that it takes a while to heat up and really can't replace a separate space heater, as I was told.