What is the best mens' deodorant?

My boyfriend has been noticing that his deodorant has been giving out earlier than he expected. I won't lie, I've noticed it too, but I have not been mean about it. I gently and discreetly offered to help him find a new alternative, and he welcomes my help. Right now, he uses Right Guard spray. It doesn't seem to do the trick, and I think he prefers sprays to roll-ons. I'm not sure where to look, but I'd like to help him out. Any kind advice is appreciated.