Exide is very good quality. We sell them at my work for tractors.
As long as you don't plan to run your electronics off it and it is only for starting it is probably a good deal, starting batteries seem to not last that long when used for deep cycle purpose, multi purpose or a true deep cycle is best for running graphs and starting.
And your motor starts with M or Y. If it starts with E - your charging system is far superior and if make any type of short run you have your battery up to full power / you can buy what you want.