Mimho

Hey guys, I just started a new gig in Songdo and I'm trying to figure out the best way to get there from Gangnam without losing my mind (and my wallet). Driving is a nightmare with the tolls and traffic, but the bus takes forever. I've heard there's a subway line that goes near, but it seems like a hassle with transfers. Anyone commuted this route and found a secret shortcut? Maybe a express bus that I'm missing? Or is the M-bus actually decent? I'm desperate for a smooth ride so I don't show up sweaty to meetings. Let me know your tips!