I will be traveling to South Korea later this year for a professional trip (it'll be my first time there, so I'm quite piqued!). Realistically, there are only two viable options for me - SV or KE.

IST - ICN (screenshots attached)
1. SV - 22 hours each way; layover @ RUH
2. KE - 10 hours each way, non-stop; ~70% price increase

I'll be applying for a travel grant, so cost considerations will need to be factored into the equation. If you've flown on one (or both), would you mind sharing your experiences? I've not flown on either airline, so I can't seem to decide at the moment.