Well, drawing from my knowledge as a Harley Tech, which did end in 2007, what I know about the difference between the 883cc and the 1200cc Harley Sportster, the 883 is detuned quite a bit from the 1200. The 1200 can run circles around the 883 like it's standing still. The 883 also has a lower geared transmission so the engine kind of screams along at simple highway speeds, while the 1200 is loafing. The 883 really is geared towards the beginner rider, and women. Both bikes are now fuel injected so they run excellent, and the fit and finish on new Harley's is second to none. Great bikes.For you Harley lovers I've been doing some research lately, my experience with Harleys is post 1980s.... nuff said......
Well suddenly I find Harley have become "tinker free" and, shock of all shocks, comparable in price to the other major bike manufacturers. So I'm looking a two models.
First is the Sportster Superlow.
The other is the Sportster 1200 Custom.
I went by the dealer and sat on both, I like the power of the 1200 but the Superlow fits me like a glove and even though it's technically a 900cc with today's modern powerplants it probably has the power of an old 1100cc.
Good luck, and I hope I helped out.
The problem with the 1200 is it isn't very comfortable for me and with my knees the extra weight could be a challenge. Maybe a new Mustang seat and new knees would fix that. When I sat on the Superlow it was like it was made for me but again, doing open road running I'd prefer the 1200. Decisions, decisions.........