Ive always like the S4r for the rad to found the 2v motors to little/naked. Even the S4r motor is small when people ask how big the engine is they dont believe u
Yep 749's are cheap now, I had a 748 before my s4r and found it uncomfy round town not so much on the wrists but the seat used to dig in and give me dead leg or pins and needles and the head down position is not good for filtering. I did try a 749 that was more comfy than a 748.
Also the thought of binning the 748 was a worry where as i now have crash bungs on the s4r which hopefully save a lot and theres no expensive fairings to worry about