First time adv bike buyer... looking at the vstrom 650. Question is, are you generally better buying the factor adv model with the adv add on's or the standard model and add on yourself? In other words, is the higher purchase price worth the value of these upgrades? Are the factory side bags aero efficient and so on and so forth? I would be buying all the factory add ons plus center stand, heated grips, skid plate, bark busters etc. I can get a slightly used 2012 650 factory adv model with less than 500 miles on it for around $7k. I really like the Triumph Tiger, I just dont want to be North of $10k with goodies etc.