As I'm probably the tallest person on here at 6'8", I'd say I can spell the beans the best in the Ovation. I have flown and teach in Ovations from the 2001's to 2008's. I fit most comfortable in the Mooney Ovation in such a way that I can't reach the rudder pedals in cruise flight when I unlock the seat and slide it back all the way. You can't do that while someone is behind you. I honestly can't stand Saratoga's because you can't adjust the seats enough to get comfortable when you're my size. Also, to get comfortable, the seat behind you is always flipped forward and unoccupied. The real question that you need to answer is what are your pilot+passenger weights and range requirements. A Skylane might have a good enough fit for you and a better fit for people in the back... although my personal preference on these 3 types flying in back is the Ovation because you are still easily seeing everything in all directions. Ovations have great windows! Skylanes cut off back seat passengers with front seat passengers with the seats and seat belt crossing in the middle (unless you're talking older Skylane that has the seatbelt feeding from the door side which gives you a little bit more center visibility from the back).
Like most here say, help us help you by providing a little more on your mission with weight and range. Oh, and if you need known icing, there is only one choice of aircraft that you listed. That's what initially made me look at the Ovation. It is the cheapest used FIKI aircraft on the market.