I found this post. A friend of mine here at work just got 2 shinkos for his motorcycle for $150. I've not heard much about them so I thought I'd start looking at the reviews. A pretty good read (well written and quite colorful). The jury is still out on the tires, but in a pinch, this may be a cheap alternative.
http://www.sportbikes.ws/showthread.php?t=106588
http://www.sportbikes.ws/showthread.php?t=106588