Brian, my original order had 26"bbls and the current choke. When I found that I could get any barrel length with Sk/IC, I opted for the longer length.
If they hadn't changed, I would have 26"bbls. today. Choke trumps barrel length with me. If the gun fits, you can shoot any barrel length pretty affectively.
For those who don't know, you can also get two barrel sets for $1,500 more.