Need to buy a new battery, bike not been used for a few years now just turned over every now and then. The battery was continually connected to optimate charger but has now given up. SO before i go and buy another ytx7abs is there any better options available now (bike will still be sitting)?

yes, you can fit a ytx-9abs which is slightly taller but other dimensions the same. it has more amp hours capacity than the ytx7abs

Perhaps a few years connected to an optimate and only turned over every now and then is all a good battery can do. Maybe you should use your car battery to turn the engine over every now and then and purchase a new battery once you return to regular riding.