Had a couple more rounds with the Roddios and here are my thoughts so far compared to Quadra 100i; more stable. Tighter dispersion. Heavier. Firmer feel. Definitely stiffer. Less elastic feeling. Less kick.
I think I prefer the feel of the Quadra shafts, but would like to add the the dispersion of the Roddios in to the Quadra's. Some of the feel could be down to the Srixon heads. The Quadra's had Yamaha Tours. I think Quadra 100i in Pro X could be the one.
So, before I get the other Quadra shafts, I'm definitely changing the heads for something softer feeling, but......I want to try other graphite shafts such as Bangvoo, Crazy Limited or maybe the Recoils. Don't know enough about the Fujikura MCI shafts but you never know.