Hello Guvenor

Yes, I noticed that NRT to CEB is a 737-800,I believe this just started this week? I'm not sure what Business J class is exactly, maybe like domestic Z? So that is my plan to bank as many FFP to either United or Delta, just trying to work this out.

I think my biggest concern is the UA $4.6k Polaris (lowest I could find) vs DL $9.2k De;ta One price differential. As noted in my original post, It's important to me to rest the ol' back so to speak, and I could be wrong but DL may not offer the Delta One upgrades for a reasonable upcharge from what I am reading now, while UA is guaranteed at booking for more than half the price.

Would you mind elaborating on the importance of the NRT to CEB flight? Thanks so much for responding!