When I bought my 01 very low mileage Silverwing a year ago it was always a toss up between it and Burgervan 650 - but I never actually tried one as the wing came along and at 7k miles could not resist it - no regrets at all.
Anyhow a couple of days ago I was at the dealer where I got it as I had a coolant leak and needed bike up on a ramp (it was a loose hose connection high up)
They had an 08 Burger 650 for sale so the opportunity was too good to miss - it was only a short ride - so my personal take -
Great bike, feels very planted, but not as nimble as the Honda. Gear change set up did little for me - power mode felt frothy and frantic, overall transmission felt a little jerkier than Honda. I got an auto transmission bike because that is what I want - just that. Does it feel pokier with the extra bhp and weight? - possibly but for me it was hard to tell, and if I were to mess about with Dr Pepper and/or whatever I might put Honda ahead - BUT - I can get 55 to 60mpg on a good day if I am half sensible and at current fuel prices in UK that is quite handy at present - anyway been there and done that with several HD's in past.
Burger was definately more comfortable as stock for me than S/Wing was before I did buttrest to backrest mod, so I suspect Burger might be better for 2 up - but my lady wife does not bother anymore since we were knocked off a Pan Euro in Oxford 7 years ago (doing 10mph)
Looking down at the 'cockpit' looked a bit like a 1980's/90's fully dressed Japanese tourer but with digital readouts - again not to my taste.
I could certainly live with one and sit on one all day - but was left really feeling the Honda a bit more versatile, better looking despite age, simpler to live with - and felt I had got something out of my system and happy with what I have.
Totally subjective take with my age/stage/build and experience - but thought I would share - sorry if a bit long winded.
Regads - John