My favourite of all time was the Hughes Airwest scheme. Especially against a brilliant, blue sky. Just awseome to see these. Current favourite is most certainly the new Saudi Arabian colors. No one else is even close. Those who have never had the pleasure of seeing it live have something to look forward to. No picture you will ever see of either of these two will show how nice they (were) and are.
Just an opinion, differences understood. After all, if everyone shared my tastes, I wouldn't think much of everyone.
The day you stop learning is the day you should die.