is the 450SA completely or mostly assembled? ... also isn't it much smaller than the 600? .... if it is then as per your experience it is still then possibly that much easier to hover than the axe?

dont get me wrong - i love the axe but will move to a t-Rex soon .. i was not sure if i should wait and save up for the 600 (which i am assuming is more expensive) thus making my crashes hurt that much more - or go with the 450SA that will hopefully hold me for a while.