I looked at all of them and decided on this one because of how wide it is-glad I did.
It is sturdy, lightweight and easy to use. My old, fat, nightblind shephard mix used it the first time with little hesitation and my scaredy-cat pug used it too once he felt secure that it would hold him. Good buy! The surface is sandpaper-like which I don't care for, but I am not the one walking up it. Maybe with wet paws it will be better than a rubberized surface afterall.