best thermostat for my program

[pyroman175@yahoo.com]

Hey guys i was hoping since im a newbie someone can steer me in the right direction. What I would like to do is shut off my swamp cooler when humidity gets to high and turn on the central air conditioner. I currently have a relay for the swamp cooler that shuts off power when activated, but currently have a NEST thermostat. As you know i cant integrate the NEST into my ISY-994. I looked on smart home and noticed three thermostats including the new insteon one, i believe 2441TH, and the 2491T7E. Or should i just wait to see if NEST will be compatible, as i really like some of the features. thanks pete