I installed OS X mountain lion today. Thanks in no small part to my OWC Extreme Pro 6G mercury SSD, the install took 13 minutes from start to finish. Impressed? I am.
I’m not affiliated with either apple or owc. I will say, however, that I am impressed with OWC’s service and products… they are one of the only manufacturers to offer a 5-year warranty on all the SSDs they make and they are assembled and supported in the United States.
[UPDATE]: Full reboot to usable desktop: 15 seconds.