An almost impossible question to answer.
'What would your top 50 knives' might be easier!
Quite a few people have mentioned the Compact and I think there is a very strong argument for this, thin, light, and a lot of utility packed in.
Then a Champ for the car/ bag/house, most of the tools you'll ever need.
Then; to cover harder environments perhaps the Farmer X or the Pioneer. I'm thinking of walking in the hills, times when you need just that little more toughness.
I couldn't truly decide, I would miss all my others too much.
