A Harley friend told me - you buy what "moves" you. That's true, but there's more, too. My history is HONDA (Goldwing, Valkryie (x2)), then two Harley V-rods.
My real descision rose from (1) my SO really did not like to ride on the Harley, and (2) while the V-rod would eat sport bikes for lunch, it really wasn't a long distance bike for a 55+ guy, who's 6'4", and 250# - (anyone mention the 3 gal tank??).
I had a friend who bought a new '05, and rode it to our place this summer (480 miles in one day - with one gas stop), and let me take my SO on a ride. We popped the windshield up, she settled back, and the rest is history, sort of.
I had gone to my local Harley shop to look at the '07 Ultras, and lo, there was a graphite '06 LT with 7K miles and EVERY BMW option, and extra stuff to boot, being traded for an Ultra.. I remembered my SO's comments, my friend's bike, and made an offer for it on the spot. A deal was finally consumated, and the new beast graces my garage.
In truth, I test rode a Goldwing, and loathed it - the 1800 is nothing like the 1500 - and that's not leaning toward improvements either, the Harley never touched my soul - old technology in every way, I have always disliked riding the sport tourers from all the makers, but if the big Triumph had some BMWish fit and finish, it would have been a tougher decision.
My last point relates to my 3K road trip this fall, which included my friend on his LT - I have never seen an easier bike to clean at the end of a long day on the road.
That's the story for me - I'm sure there are many others. My recommendation is that if you want an upright bike that will blow the wheels off almost any other two wheeler - look at the V-rod. If you want a two wheeled BMW (I have owned 7 of those), that's smooth, fun, and the SO will approve of - go for the LT.