my friend had a original be100 when he purchased the ss several months ago. the difference is that the ss sounded clearer and more fiery and refined in the high gain department and sweeter and more fendery feel in the cleans. the be100 had a glassier more marshall clean and throatier rawer dirt.
i personally gravitated to the ss when i first compared it to the be100, after playing them both at the namm show booth.