A 2500 will meet your needs if you plan to stay below 33ft. We like to visit State and National parks and have found there are usually private RV parks or resorts nearby that will accommodate our 38ft 5th wheel. We drive into the state park or national park to see the sights each day and then enjoy full hookups and other amenities at the private RV park each night...best of both worlds.
So for future planning the 3500 may be a better choice. I went from a 1500 to a 2500 to a 3500 and now have the perfect tow vehicle a C4500 Chevy DuraMAX dually crewcab. I use it as a daily driver around southern California with no problems.