I think this would be a tough call as both are excellent products. I have used the Sistrum 101's under a variety of tube monos over the years and they have always performed well. I have used the SRA Ohio Class product under a Hybrid and Tube amp and it also performed very well and on at least the level of the Sistrum.
Maybe the one you can get the best price and like the looks of??
Maybe the one you can get the best price and like the looks of??