ATR's are good for cargo. Have the large door already and some
fancy a 3 m cargo conversion door.
ATR = less fuel but also less speed
DASH = faster, higher
ATR probably more into the cargo business and short flights while the DASH is more the passenger aircraft and can sustain slightly longer distances.
TURBO PROPS
Try to fly from EDDK (Cologne-Bonn) to LSGG (Geneva) with 40 PAX and a burn off of more or less 1 ton in a Jet.
If fuel prices will continue to go up - and IMHO there is no reason for them not to we may see some very nice flying offices with full EFIS advanced noise reduction etc. in the future.