The regular Extreme X2 243 already comes with a 9 twist. I'm sure the 8 twist is nice to have, but 9 twist 243s have sent a lot of 105 VLDs and Amaxs downrange in a stable manner. If the factory twist would have been 1-10", the group buy 243 would really have an advantage. Not so much when going from 9 to 8.
Something like an 8 twist 22-250 would have been a significant difference over factory options, and would really fill a niche.
