having worked for a school that had both types most students finished their ppl usng about 15% less hours in a 300 than in an R22
The 300 has the advantage of giving you and the instructor a bigger margin of error so one tends to learn quicker on the 300.
Realistically the most important aspect is the instructor, Get one who has a good 1000 hours on type, he will know the machine well and then stick with him
Good luck, or get an R22 rating and come over to UK and i will do a 300 conversion ( have about 4000 hours teaching on 300's)
