i have both a dragonfly and a bizarre v2, and IMO there both very good solid machines my personal pref at the moment is the bizarre i find the extra throw nice as i tend to ride the needle, it does sit higher in the hand than the dragonfly and i find its louder in general.
both of these machines have a pretty heavy price tag so would be really good to get hands on with your options before laying out the cash,
also the hyper v2 is a great bit of kit