I have a m70 3pos safety, I have a Remington m700 2pos, I have a tikka t3 2pos... My Favorite safety is the exposed hammer on my BLR though.
Tikka is my favourite on a bolt gun. I love that it locks the bolt. In fact I'll periodically give the bolt a lift to verify the gun is safe when slinging it loaded. I do not have to look at the rifle to do this. As mentioned, if you are German-safety conscious, there are 3pos upgrades available for tikka... And Remington.
My dad's (former) hunting partner had a negligent discharge with his M700 while slung over his shoulder. I don't fault the safety, but I know I have bumped my 700 off of 'safe' accidentally. I have NEVER had that happen with any other design.
They say a good driver checks their mirrors every 8 seconds. I feel like a similar best practice applies when carrying rifles afield - keep an eye on on the safety. Maybe not every 8 seconds, but with a tikka you don't even have to use your eyes!