CDG takes the prize.
FRA Comes in second.
LHR except for T5 is unorganized mayhem
MAD T1, T2 & T3. T4 is ok, unless you get in and go through immigration to then get to the train and leg it to your gate.
MIA can be a Royal PIA to connect.
The one thing that sucks about arriving into the US from foreign countries, is you have to go through immigration, get your bag, have it checked and then dump it on another belt and hightail it to your gate.
And let's get one thing straight. There's a big difference between a pilot and an aviator. One is a technician; the other is an artist in love with flight. — E. B. Jeppesen