Corona all the way. It's much easier to learn on than a micro and you can fly it outdoors in wind. Indoors also if you have a big enough area, probably not the smartest thing, haha but I hover mine in my small 12x12' living room all the time.

Very durable and way more stable than the micro. Sure you can learn on a micro and a lot of people do, but your chances of succeeding are much better on a Corona, it's a lot more lenient on set up, micros have to be set up right on to have a chance at flying.

I consider myself a pretty fast learner all around and I got a micro for my first, after about a week, I could hover maybe 5-6 seconds at a time, this is with practicing 2 -3 packs a day and a lot of frutration witn tweaking with the heli to set it up right. I then got my Corona in and no joke, with the gy 240 hh gyro, I could hover for the entire charge (about 6 minutes) within 2 packs. It really accellerated my learning bigtime. soon after a bunch of packs with the Corona, I could hover the micro for the whole charge.

I gotta admit though, micros are cool because they're small and you can mess around with them in the house without really worrying, but not really the best to learn on.