I would consider getting a 600 to get acclimated first. The new 1000s are completely different than 80s bike, and has more power to weight ratio than 1100XX. 2006 bikes have 160+ HPs to the rear wheel, and weighing around 420-450 pounds, not much room for error.
As for which bike is better, they're all the same, pretty competitive and comfy or uncomfy for some, as it goes, so it's up to the rider to sit and find out.
Rider's weight is not an issue when it comes to race replicas, they're all bloody fast to carry anyone around.