Just the ThermaQ Blue, at the moment.
Quality wise, they should be exactly the same. Roastmaster will show you all the temperatures concurrently (based on the defined curves in a roast), so the extra screen real estate of the WiFi model doesn't yield any real benefit in practice. But that model does add complexity by necessitating a wireless network. The ThermaQ Blue model, of course, is a direct Bluetooth connection - it's easier and doesn't involve any other electronics, so I haven't given much thought to adding support for the WiFi model.