Are you going to be looking a new or used 3/4 ton trucks and will you be towing or carrying a RV...and what type rv and how heavy is your RV.
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If used I would look at a F250 if your looking at hauling a heavy truck camper or 3200-3300 lb hitch loads. If you get a F250 with the camper pack or heavy service pack then the truck comes with the same suspension as a F350 srw. The F250 has std leaf spring suspension.
The 2500 Ram has coils springs on the rear. Not the best for max loads.
Wait 2 years if your asking about a new truck. Like Rick says a whole new game change with our trucks can happen in 2 years.