Movies

Have a chance to go to the movies. Not sure which one I want to pay to see on the big screen. I really want to watch Avatar, but should I see the 3 d version or the regular version? Should I pay extra to watch it on the IMAX screen or just the regular version? I can’t decide. If I just watch the regular version and save my money, I can probably save enough from this one to pay for a second regular movie next weekend.