I am a total creature of habit and I hate change. But sometimes I don't have a choice - like when I'm too lazy to go to Runner's Corner the day before a long run. Last week on my long run (14 miles) I didn't do GU and just used what I had in the drawer. I didn't feel great on the run so I'm going to blame it on the gels and go back to my "go-to" gels. Personally, I love Roctane and regular GU's. I usually alternate between them on runs. So I stocked up at the running store. Bring on the training my drawer is full.