Also because there is no actual difference between the compact and standard versions except the bolts of the spider, I had it changed out to a compact at that time, and was only out the cost of 110 the BCD chainrings.
umd: we corresponded, i believe, on this a long while ago. i've been using R700 rings on my compact because i wanted to stick with shimano rings (sram force (110) rings did NOT work for me), and DA7950 (110) does not work with quarq cinqos.
at one time, specialized rings were not working well with quarqs, though i believe that has been resolved with newer specialized rings (and perhaps the change in the specialized cinqo).
what compact rings did you find worked best?
i'm a little leery of trying the sram red (110) rings given my experience with force. i suspect the red outer is stronger than the force 50T, but the inner rings are identical, i believe.
i initially chose the R700 50/34 as it was ultegra level and had more of the design (well, at least the "look") of the DA7800 53/39, and i had good success with the DA7800.
i'd really love to go with DA but just can't. ulty 6750 is not an option either.
should i look for 6600 rings?
the 6650 looks lighter, for sure -- but i am mainly interested in stiffness and shifting quality.
any other good options?