Not sure if you pulled the trigger yet but this question stood out to me as I found myself in a similar spot a while back. Long story short I'd personally argue you need both but it depends on what you want to do. In my case here's what I'd do w/ these 2:
7'4 H -> frogs, flipping and pitching into all but the nastiest lake okeechobee roland martin type stuff...heavier spinnerbaits and heavier jigs...maybe like a 6" magdraft or a mini a-rig but that would be about it
7’3 XH -> if you want to get into swimbaits more this would be the starting point as you could start looking at stuff like a 6" shadtron, bigger a-rigs or a 5" bacca burrito...probably also better for an actual 'punching rod' where you are pulling them out of really nasty stuff.
If I didn't own either I'd start w/ the 7'4 H...that would get you most of the way there and you could still throw smaller swimbaits on it and decide if you want to branch out.