Ive got the SD43 and am loving it - I would add that I have rather large wrists at a chunky 8.5" so suits me perfectly, Ive since sold my BLNR and my 116655 as by comparison they just felt really small on my wrist - its just an opinion but I think the larger size is perfect for me but a friend has one on a 6.5" writs and I think it looks oversized on him but would he do a cash swop for the blnr no way :( and I had to pay a £1000 over list - that said I love it