Did it the other way around from SFO or OAK to DEN for almost a year. Wasn't bad at all. Lots of flights out of both airports but I usually came in the day before and had to ride the jump about half the time. Sucks either way but compared to my previous commute it was great! Just don't forget OAK. It's pretty easy to get from OAK to SFO if you are familiar with BART and have some time. SJC is also an option but Caltrain doesn't run that often.