Hi Chris. Do not have the Seneca but I am the proud owner of a 2010 Melbourne 29d which I just purchased from the original owner. We just returned from our first trip and am extremely pleased with this unit. I had a Itasca Class A and the main difference between the A and the C is drivability. The A of course has its pros and cons as does everything. With the C you definitely lose the basement storage, but the drive is almost like in your car. This 31' Melbourne is towing a 2011 Jeep Liberty behind. That equates to about 50' of rig and am pleased to report it was like driving my car. I had to keep reminding myself that the Liberty was in tow. Jayco put together a tremendous unit with the Melbourne so am assuming they did a great job with the Seneca as well. Good luck and Happy camping!
