About the helmet thing, give the Blowin' the Lid Off" article in the June '05 issue of Motorcyclist a read. They did a bunch of objective testing on the actual protection from G-shocks provided by a bunch of helmets in various types of impacts. Their results were pretty conclusive. If the helmet had a Snell rating IT survived better in an impact but allowed MUCH more energy to be delivered to your cranium. Don't know about you, but I don't care how the helmet looks after the crash, it's my nugget that I care about. The helmets that absorbed the most energy, what you want a helmet to do, were "only" DOT rated
They said point blank the a Snell rating was not much more than a selling tool. quote from a person in the helmet making industry from the article "When you build a helmet for this market, meeting the Snell standard is your first, second, third, fourth and fifth concern. You can then start desinging a helmet that's safe."
Their basic conclusion was that the liner material that is supposed to absorb the energy of an impact in Snell rated helmets is so stiff in order to meet Snell standards that it does a poor job of really protecting your head from the actual impacts that you are more likely to encounter in a real accident rather than some 150mph head-first run into a brick wall. The Snell standards are not and have never been based on actual accident data and while they got the industry headed in the direction of standards for helmets (and not just for motorcycles) they do not really mean anything from a protection standpoint.
Best performing helmet was the ZR1 ZRP-1 which is DOT only and outperformed all the Snell helmets by almost 20%.
On a side note, I love Triumphs, too. My Speed Four is sadly in the shop right now ofter hitting a slick spot of pavement in front of my house. Front end washed out at around 10-15 mph and laid it down on the left side. Still waiting on the insurance company to get back to me on the damage. Nothing but a skinned knee for me through the jeans (not even a scuff in the denim). Been thinking about trading it in on a 675...