I still have G-2 and use it once in a while when learning something new or going over a sequence to get it locked into my brain. For the most part it doesn't get used very often. Today I will turn it on and freshen up my brain and fingers doing rolling circles then tomorrow I will go out and do them for real. It's a lot cheaper then learning something at the field, the crashed planes just pop up and reset. They are good leaning tools.