are you saying you can do a straight trade?!?? if that is the case then it's no question of course you should do it. There is a big difference between the bikes, totally different drivetrains, frame, ride position. You will def be more comfy on the SG because tho the heritage is a great bike, it is a best of both worlds, luggage capacity for long trips but light enough for around town riding. the SG is good for around town but great on the highway. bigger motor 6th speed is great on the highway and all around more comfy.