Going longer

I've ranged from 19' to 35'. 27' to 34' is a 29% increase in surface area. The longer or taller, the more side wind you'll catch. Not that its usually a big deal with a decent TV, but between the larger surface area and likely more trailer weight, you will feel some difference imo.

As far as maneuvering, I don't care for either in small gas stations. Not really an issue for me other than that.