As the undisputed champion of underpowered tow vehicles (4-banger Subaru Forester), I have to say it is a transformational experience to upgrade your puller. I just became the proud owner of a 2012 Toyota Tacoma V6 4WD with factory towing, giving me 6,500 pounds of pull compared with my Subie's 2,400.
The difference is far greater than night and day.
I just hauled my 2011 14RB about 1,700 miles on a week-long trip to the Mendocino National Forest in northern California. I had the 6-speed manual in fourth gear going up some of the mountain passes at 45-50 mph, but it was mostly because I was being careful not to tax the new engine and I kept the torque steady on steep grades. As other V6 towers know, you won't ever say "I didn't know the trailer was back there," but the Tacoma is a very able and robust TV.
And with the outside temps in the way-high 90s, being able to use the AC in the mountains without watching the engine temperature gauge was another major bonus.
As is the ability to pack anything and everything I ever wanted into the trailer (keeping within the approved total payload, of course). When towing with the Subie, I had to go to almost bicycle-level weight-control strategies. One roll of toilet paper. Two plastic plates. Measure out each day's dog food.
And my little Sportsmen Classic was absolutely perfect during this week away. Every system performed flawlessly. The Norcold fridge froze stuff running on propane and made ice in the freezer. The hot water heater was such a luxury! And one day when we had a full hookup, I took my first shower and ran the AC. No water on the floor, and the AC cooled the trailer off pretty well after about three hours on high (it was 98 outside). I think the AC is pretty wimpy, but it beat the heck out of a buzzing 12-volt fan.
Anyway, I am the proverbial happy camper now.
Jim