If your just wanting to look at new trucks... go take a look at the new 2014 Ram 2500 SLT Big Horn or higher trim packages with the 6.4 Hemi. Co-worker just picked one up and I have to admit, if I was in the market for a 3/4-ton gas it would be on the top of my list.
Power wise, the ecoboost is about 1-2klbs lighter depending on your trim package and puts down pretty good numbers. So the half-ton Ecoboost will feel like it's faster. However the 3/4-ton platforms are hard to beat for their stability, it was night and day when I went from my 06 F150 with tow package, 3.73 5.4 to 08 F250 Diesel. The trailer didn't budge that truck around at all.