I will mainly be lifting smaller vehicles. I have a 1975 MG and a 1989 S10 Blazer but I do have a 1989 C2500 extended cab, full length bed, truck. It is about 22 feet long so I think a symmetrical lift would be best for lifting the truck. If there is an issue with the pillars blocking the doors on the smaller vehicles then I thought that the wider lift would help with not obstructing the doors on the smaller vehicles, so much.
I hope my reasoning is sound.