I'm into aerobatic/3d flying. I'm looking to get a lot better and wondering if it is worth getting G2, especially considering I'd have to buy a computer to run it on. (Use Macs). I'd say I'm intermediate, can do most standard routines, sloppily

but am just moving into 3d.
Plus I live in San Diego so I can fly all year 'round.
How much would G2 help me. Is it worth the $500 it would cost. Or should I just get out there and fly?
Balin