I'm facing an around the world business trip using an OWE. Being London based I may try for an ex-IST with stopover in London but the first 'proper' leg is LHR to ICN.

Not sure yet if the budget will be for a DONE4 or AONE4 but given there are a number of vaguely sensible potential routings and airlines to get there [ICN] does anyone have experience/advice to offer?

The rest of the trip onwards to SYD-LAX-SFO-BOS-LHR is much more self defining given my dates/times of travel.

Thanks