The point re the R22 vs R44 for training is simply this. Generally a student will pass his test in less hours in a R44 than a R22. So you may do it in 50 hours in a 44 whereas it may take 60 in a 22. This is from speaking to people who have been taught on both. So it may work out a similar end price, the datacon thing does make a difference but at the end of the day looking at the big picture not that much. I don't own a school but really don't see what the problem is in adding .1 onto the start up and end of the flying session, after all you are using fuel and oil and applying some wear and tear to the machine. I own my own 44 and still fly a 22 an odd time and think they are both great machines. You can also specify a 22 from the factory to have the datacon collective activated!