Originally Posted by patrick07
The PG-970 (12-23) is 230g and the Ultegra (12-23) 9-speed cassette weighs in at 203g according to Nashbar. I know this because I'm shopping, too. I'm probably going to get the PG-970 and save about $15. Besides, I like the nickel-plated version better.
According to weight weenies
http://weightweenies.starbike.com/li...type=cassettes
Shimano Ultegra CS-6500 12-23 9-speed 196 g
SRAM PG-970 12-23 9-speed 189 g
They don't list a SRAM 12-23 PG 950, but for comparison, they do list
SRAM PG-950 12-26 9-speed 228 g
SRAM PG-970 12-26 9-speed 220 g
So my guess is that a PG-950 12-23 would be virtually the same wt. as the ultegra.
Shimano Ultegra CS-6500 12-25 9-speed 220 g and I prefer the 12-26.