Yup. They work great.
I've used those exclusively for a while. (From YUASA via Amazon)
Pretty easy to setup, then trickle charge for the initial charge and GTG for years.
Just like any battery keep it on a tender while not in use if ya can and should last as well or better than the OEM bar weirdness.
Far as Lithium goes. Haven't used 'em. Read too much and saw too many reports about cold weather issues, and they're expensive. Maybe if I lived in FL or something..