Took a quick look, but didn't find the level of detail for that Trane Comfortlink (the one from Amazon Matt linked) as I did for others in the Trane lineup. I know it requires an accessory module to support a dual fuel system if that's important to your installation.

The internet connectivity which they call Nexia, costs $9 per month. And the stat is Z-Wave ONLY, requiring a Nexia Z-Wave bridge to get it connected to your IP network.

IMO, it's doubtful that this stat will save you $9 per month over a more pedestrian programmable model, let alone the price of a Z-Wave bridge on top of that. IMO, EcoBeee seems like the leader in the web-enabled thermostat game at the moment.

Other than that, if it compares well in other areas to the Comforlink II, it's definitely a very capable device.