Any V8 Durango or GC should fit your needs. Including towing an open trailer. The Durango will tow better with its longer WB but the GC is OK. I've run a GC and all generations of Durango. I am not crazy about the Commander... though I have never run one. Maybe it is because I saw an amazing number of Commanders in the ditch driving through a heavy snow storm through Iowa (in a Durango). Maybe because of the looks.

Anyhow, all Durangos (and Aspens) are nice but each version got better. The 5.9 gen I was good but fuel mileage so so. The gen II Hemi was better in all respects. The gen III Durango was better and the 8 speed Hemi is better yet. If you get a gen I or II Durango with the 9 1/4" axle, watch the seal. Try to catch a leak early before big problem. Don't ask me how I know... .

For the 4.7... its a nice match for the GC in performance and also has the sensitivities you mentioned.