DF loves Aqua Di Gio. He also has a Gucci one I bought him a couple of years ago but it smells almost dirty.
He recently chose Armani Code Ice as his wedding smell. I really like that one. Original Armani Code is great.
Also Google those scents he already loves, you'll be able to find the family of scents they are (woody, oriental, musk, etc) and then you can try searching based on the scent family or base notes. That's helped me try new fragrances
Actually, the Jimmy Choo one is called Man, not Jimmy. He's also got La Nuit De L'Homme by YSL which is lovely, and Euphoria by Calvin Klein. I like CK but find they're less masculine than their counterparts.