I would get the Accent. Since you are referring to the top of the line GLS variant, then it has no fuel knock problems as it uses the 1.6L engine and not the 1.4L which knocks. The Accent is newer than the 1.6L Lancer, it's faster, roomier, more fuel efficient and looks better. Only problem I know about it is the rather soft rear suspension which is no biggie as you can have that remedied easily enough.