Welcome to the forum from the Keystone state. Good luck on your search for the perfect Wing. Lots of great bikes out there with a lot of miles left in them.
For what its worth, if I was looking for a used Wing I would go for the 1500. I think there would be a larger selection of used bikes to choose from and the availability of OEM and addon parts and improvements made on the 1500 over the 1100 and 1200 models would sway me. But the choice is yours because you should buy what you like and can afford.
Whatever Wing you get I'm sure you will be satisified. Enjoy and ride safe..
I am looking for a gl1200 because I lke the look ove the 1500 and I am assuming its somewhat smaller, I dont want to sink a whole lot into the bike right now, not knowing if I am going to like it or not, or if we have the time we think we have.
That being said If I could run accross a good deal on a 88 0r 89 1500 I would probably buy it.