'ya, I know the H-300 is more safe'
Not so sure about that. R22s aren't exactly falling out of the sky because they are scrap. No helicopter is perfect. The R22 and H300 have their good and bad points both. There is very little margin for error in the R22, thats for sure. But if you can fly the 22, you can probably master any other single as well. The low-G problem is well-known and easily avoided. The H300 is very stable in comparison but overall the 22 makes for a better pilot. I did my PPL in the 22 and the transition to the 44 was fairly easy. Have a little experience in the H300, H500 and B206 and handling-wise, the 22 prepares you well for all these machines. To go from the H300 to the B206 would be quite a jump given the different way the cyclic is set up in both machines. Go for the 22, it'll pay off in the long run.