There is no EDF (Emotional Debt factor) present when using the sim. IOW, you're not worrying about breaking your expensive toy.
First of all RC Helicopters are NOT toys. Second if you "Believe" that's your $1000 helicopter in the sim, you will do everything inyour power not to crash. That's what I do. I'm a "newbee" and honestly wouldn't want to buy co-pilot. I think that I, this is just me, would get too dependant on it getting me out of tough situations. I would rather learn how to get out of the tough situations, than relying on something else. Also I emailed one of the sponsors (I really don't remember who), who sells co-pilot, to ask some questions and he told me not to waste my money. He said if you already have the sim use that to practice with. Also warlock, you have the largest thread ever dedicated to co-pilot. I honestly wouldn't want to buy anything that's so confusing & hard to set up. Yes you do need a decent PC to run the sim. So I say, whatever works for you

If you can afford both, plus a radio & helicopter, go for it. I also agree there's Nothing like the real thing, be it having a sim or co-pilot to help. But that's what they're both for, to help. I say, its a personnal opinion/choice