I've lived in Temecula for about two years now and my girlfriend just visited me from abroad. I planned a one-week trip that started in Napa and went all the way down to Temecula driving the HWY1.
The very last day before she left, we went balloon riding and I have to say that this guys now what they are doing. I literally booked last minute on a sunday night and they arragned my booking in a matter of minutes (great service), plus, pilot is very skilled and very friendly. As for the views, well, simply amazing!
California Dreamin' for real!