Depends on if you want to hard mount or portable. Hard mount once installed is no worry about forgetting it or having the portable one grow legs and find somewhere else to reside.
Found the best price for them at Twwety's rv store
It's a 60 amp progressive dynamics. If my memory is correct and that's a big if lol it's a model PD4560
Thanks SGT. I checked the manual last night and it at least a PD4500 series so a 4560 could.be right. I just need to confirm the charging profile to help with a battery purchase decision.