the micron has gotten some mixed reviews. from what i've read, it seems that the heli needs to be as light as possible, which means using the more expensive radio electronics. the peoples who's heli was heavier said it was no good at all, but the people who kept it light as possible said it was a nice little heli. at its small size and light weight, it makes it pretty skittish though. most folks say unless you've flown heli's before, its better to buy a flight simulator and learn on it before actually buying a heli - you'll save money in the long run because you wont be buying so many replacement parts that break
somewhere here on RCU there's a micro helicopter forum. do a search there and i'm sure you'll find a few threads on the heli.
is the other micro heli you're referring to the PiccoZ/PicooZ? if so, for the price, it cant be beat. most of them need a little tuning and tweaking to get flying right, but otherwise they're pretty fun. but, comparing the piccoZ to the Micron...well, there's just no comparison. the micron is a true fixed pitch heli, 4 channel, ect. the picco is a fun little toy, thats about it.
nick