I have a Bermuda and near me is a steep hill, about 1 in 5, it is short but with a bit of effort on my part the Bermuda goes up ok.Hello BK
If you live in a flatter area, then I guess you could go for the Bermuda, but if you're going to put it under a lot of load, go big or go home.
If I were you I'd want to try both, then make my mind up from there.
I quite like the idea of warning people about the big bear in my garage!
Gaz