Rooster to add my 2 cents, if you have the room for it and your budget allows I would get the extra rod. As others have pointed out consider a 7' rod and use it for worm/ jig fishing. The 6'6" combo is great for shallow running cranks/ spinnerbaits and 6'6" rod  is a great length for roll cast when fishing around docks and heavy cover. I used to use a 6'6" MH rod for worm fishing but in my opinion a 7' rod is ideal for pitching soft plastics into cover or if casting along a weedline in clear water it well help when long cast are neccesary to aviod spooking the fish, I think you'll see the differnce if you get to fish it for a while.  Regarding tip, it will vary by manufacturer but though it's important to have a fast action rod that loads up on the hookset, I would be wary of getting a rod with an overly stiff tip because in my opinion it will compromise sensitivity if their isn't a little give in the last  9" -12" along the rod tip. If your budget allows consider the Loomis IMX 7' MH model MBR 843C or a Setyr 7' MH model BNW184MH which is a little less in cost than the Loomis but is also an excellent choice.

I only have one XF rod; a M-7' BPS Pro Qualifier. It has become my favorite BC plastic rod. The faster tip allows for a good hook-set and the M action protects the 10# line I use most of the time. My jig rod is a MH-F that is better suited to heavier line IMHO. I enjoy the selection process of buying new tackle. 8-) Good luck.

It sounds like you want a different rod even though you seem to be more than happy with what you've got. Get the same rod in 7' and make it your worm rod. That way, you get new but still the same.