What's the general consensus on IB Biz class? Have a trip to GVA next summer for a conference. Flying ex JFK, I can fly JFK-LHR on BA/AA and then LHR to GVA. Or JFK-MAD-GVA all on IB. Fares are about the same at this point. I am not a fan of the T3 - T5 transfer at LHR and wonder if MAD is worth it to fly through there. Lounges better than at LHR?