Darton has been around for a long time---a long time. They just don't have 4 page ads in every magazine published. They were the original producer and patent holder of the "cam+1/2" technology.
Good, good bows.

Alpine probably makes good bows as well. I've never shot any, but have handled them and didn't care for the clumsy feel of their modular riser bows, but that's me. I won't say anything negative other than that.

Both bows are handled by various pro shops and in some box stores as well. Dealer locator on their respective websites is the best source for who sells them.