Hands down the Q400. Biggest POS with wings I've ever gotten my hands on. Lots of neat toys but seemingly the low budget Chinese knock off versions and it was always, always, always (did I say always?) breaking. Not to mention quite possible the ugliest thing in the skies next to a shorts. The CRJ-200 is a close second, but at least it's been more reliable. Significantly more.
I don't generally like anything with a high wing, maybe another reason I hated the Q. Spent most of my early flying hours with Piper products and still prefer them. I must admit though that Cessna turbo 206 in all leather with all the toys was pretty pimp @
drunkenbeagle