If you look at the box of the Neo, it actually says "Neo for Iwata", this is because Iwata was impressed enough with it's performance considering the low price to endorse it.
Consider this statement "My neighbor's uncle has a daughter who has a dog which sniffed a street artist who had a friend who owned one and he said it was crap", ridiculous I agree, but I see this kind of statement every day here and on other mediums, without personal hands on experience with any airbrush, no one can possibly know how an airbrush will perform, but it also has a lot to do with luck of the draw and how you handle it, if you drop a Neo and a Micron together on a concrete floor, do you actually believe the Micron will continue to perform as it did just because it's 8 times the price, course not.
I've had a Neo for nearly two years and never had a problem with it, never even replaced a single part on it, and it still keeps me happy to this day, this makes me think that anyone who has had a problem with it either didn't have a clue how to handle it in the first place or they got a Monday model, a problem with the Neo as with most airbrushes is that they sit a long time in the shop before they are sold so that the lubrication in them becomes a little hard affecting performance out of the box, so it's necessary to strip, clean and lube before the first use.
I've also had Harder & Steenbeck Evolution 2 in 1 silverline at three times price, which gave me so much grief that it destroyed my soul so bad that if someone offered me one for free I would have no choice but to stab them in the eye with it.
My point is any airbrush at all will perform to your' liking if you respect it for what it is, which is a versatile though delicate piece of equipment.
At the end of the day the choice is yours, but my experience is if you choose the Neo you won't be disappointed as long as you treat it right, you could do a lot worse than check out Don Wheeler's website or even ask his advice, he is a member here, also hunt down another member called Snoopy who produces masterpieces with a Neo.
That's my tuppence worth, thank god I got that out, time to breath now,