Since purchasing a Phantom v1 this summer and becoming totally hooked, I've gotten a bit silly with indoor flying with micro-quads when the weather is less than great. The basic Hubsan units are affordable to the point of being disposable- yet, they have been taken quite a beating and are all still working great. For comparison in flite characteristics, I also purchased a Blade Nano QX. Compared to the Hubsans, it's got a sort of smoother feel to it- hard to describe. Seems to be a bit lighter as well- it's bare bones compared to the Hubsan frames and has a built-in bumper system as part of the frame design.
I like all of my little micro quads I've purchased: Blade Nano QX, Hubsan H107D (with cool fun-to-learn FPV built into the controller with recording in the contoller), Hubsan H107C (on-board MicroSD recording - lo Res but fun still) and Hubsan H107L (basic let 'er rip and crash unit).