I have a similar dilemma. I am *G with AC but will be doing a fair bit of LHR-PRG with OK. Any help deciding which FFP to use within this alliance is quite helplful. I'm most concerned with lounge use and priority check-in. I don't care a great deal about upgrades as I will likely use only short-haul routes. I'm tempted to think that the OK programme is probably best, but are there some clever ideas out there?

Thanks