I've RTFF and decided this one's for me, but when looking to buy one I find that there are US and Euro versions with conflicting info on sound levels. White Bros website claims 96dB for US version and no Euro info. Some sources state US:96dB and Euro:98dB but some are other way round. Anyone know the truth? I'll be riding only on the road so I can keep or junk the spark arrestor if that's got anything to do with it.