I Really miss my dragonfly. These are all great machines in there own right. The only down falls of each(my biased opinion):

Dragonfly: a bit underpowered for larger needles... but for portrait type work it'd be my first choice. It's really light and compact, and every smooth polished surface exudes quality.

Halo: great versatility but it has more hit even in short stroke and are louder than most rotaries. The vise is also a bit under built IMO. Still light and compact, I don't think I could ever get rid on my pink one lol.

Hyper: I've only had the V2, which was cool but it seemed too heavy, wide and overbuilt in the frame. I also didn't like the vise much but the V3 has a much better guillotine vise. It is pretty versatile and being a swashdrive system does a beautiful job with little trauma.