Originally Posted by Ah Clem
I have both.
A well set up 450 is a very stable machine, but the 600 is incredibly stable. I would learn on a 450, it will hold up in reasonable wind fine. It is well built and inexpensive to repair.
When you are completely comfortable, go to the 600. The 600 is the easiest machine that I have ever flown. It is incredibly smooth, will stay locked in a hover, yet is very agile when you want it to be.
I agree. I also have both and can agree with the above statement.