Yes they're very good, essentially a re-branded Hobbywing v3.1. Loads and loads of options, especially when connected to the PC. My fan is VERY loud though.
Make sure you update the firmware too, they released a brand new v2 firmware a few weeks ago.
You can grab the latest Sky Link software here:
http://www.skyrc.com/index.php?route...ownload_id=123
Mine did actually have a problem, where it wouldnt turn off but it does seem to be a very rare fault. Theres a large post of the RC Tech forums with very little issues.