I've owned Cessna 310s, Barons and Senecas but not a V. I'd rather have a turbo 310R than any of the others. Barons are well built but expensive to maintain, check the number of screws and cowling fasteners you need to undo on Some Barons to do a proper pre-flight. Rear legroom in the Seneca is a real problem if there are four of you with 8 shoes to fit in a very limited space. The rear seats in the Baron are small, think children not adults. Yes you can change seats in the 310 and as the PF on a long day I had a kip in the back for an hour or so prior to a landing at 11.59. Barons are under braked compared with C310. Don't drop anything you need in a Baron as you cannot reach the floor to pick it up. 310s have a flexible wing and give a better ride in turbulence. Enjoy.