I have been knitting only one project for the last 2 weeks. My Basic Black cardigan in Tango yarn. I have managed to move from around 4 inches of the back knitted to a completed back, the left and right front and have just cast on the first sleeve. I have noticed the rib sections take a proportionally larger amount of time than the stocking stitch - even with resizing and short rows, they are also more prone to periods of procrastination. Overall it really is amazing how much you can get done when you don't have other projects to distract you. It has really been the best antidote to spending a lot of my time on research and preparation for job interviews.
The Koigu yarn is still thinking about what sock pattern it wants to be.