I'm with Allied, which is now a part of Nationwide. I was going to switch since I had paid $124/year to Progressive for two years and last year went over to Allied for about $110, but then when the SR's policy came due back in April, the bill was for $75/year which was less than a Gieco quote of $80/year in 2006 earlier. On June 1 I added the 650B expecting it to cost another $75, but it was added with no additional cost for liability.
I figure that being able to ride either bike and have them insured for essentially $37.50 each/year, isn't a bad deal.