I have a Hang-On mini and it's great! Movement is a snap, it is a light cab. The only thing that needed adjustment was the acceleration pot. Sega's Nanano (sp?) monitors are some of the best, mine has never been capped and it looks great.
It has a place in my arcade as a 100% pure against-the-clock racer. It doesn't have the length or music of Super Hang On, but it does deserve it's place next to Space Harrier as one of the earliest games that led to Sega's late 80's and up arcade dominance (up until the present day give or take). For me it set up the stage for the Sega's vehicle games: Afterburner, Thunderblade, Outrun, Super Hang-On, etc... If you grew up with the pack-in game of Hang-On/Safari Hunt on the Sega Master System, it is also a no-brainer buy (good memories).