Touring means it's a 2-up or two person legal (required in some states if you ride with two on the bike). X2 is a 2-up with the tilt dump bed in the back (what I just bought). With the X2, the seat back is adjustable for one or two persons.
Deluxe just means a couple extra features such as the work light kit--white lights in the rear with an on/off switch on the console. I installed the work light kit after I bought it, but they are not that illuminating, to be honest.
I believe HO (high output) is just a model version and it can be a carb or efi engine.
Good luck with the new ride!