Kona Sutra vs Marin Toscana vs ?

there isn't really a difference between a 'touring bike' and an 'expedition bike',

huh? WTF. if that's true then why do you say

caliper brakes which wont provide enough stopping power on a loaded touring bike. this is often the case with audax bikes great light tourers but not really up to trekking. two different bikes really.

and while I'm at it will you also please try to be a bit more consistent - how can you say that

it's generally advised to get components that can be easily replaced and repaired wherever in the world you are going to be.

and then go on to recommend an aluminium tourer

i have suggested this bike on another thread and i think its the best value off the peg audax, not at all classy though and its an aluminium frame

I'm calling alias - edscoble.

i was helping a mate put together a touring bike

and this is the sum total of your touring experience? it shows.