You'll find loads of info if you do search.
I think in some ways the 1200 is a better bike from a purely riding perspective, especially the twin cam, that motor is superb. BUT if you look at the bike as a whole package ie simplicity, build quality, ease of maintenance, rider engagement value for money etc etc then the 1150 wins for me. 1150 gives the appearance of a bike built by engineers to be the best big adventure all rounder they could produce with little input from the bean counters. 1200 gives the impression of a bike built still to that mandate but with more input from the bean counters and converting riders to adventure bikes. Both great bikes but the 1150 is my choice as a long term keeper. That being said, the standard seat on the adventure is truly awful, especially for a slim/,light person, the suspension benefits hugely from custom shocks and the stock lights are truly terrifying if you want to make decent progress in the dark. If you buy an 1150 and intend to keep it, changing the shocks for decent custom tuned units really unlocks the potential the chassis.