I use a tonneau cover nearly all the time when I don't have rear passengers as mine's a 4 seater so there is more tonneau to cover
If I had a two seater, I would definitely go for a three zip cover, probably in PVC as it's harder wearing as it would get a lot of use and regularly cleaned with Armour All semi Matt, it keeps it looking great
Mohair does looks nicer though
The three zip just helps to keep a bit more rain out and a bit more of the warmth in
It depends how much you want to use the hood and sidescreens
I try not not to use the hood or any screens at all unless it's really wet and I've got passengers
