Oh nice @jobocan. The Virtual Boy is the only Legacy Nintendo system I am missing. I hope to get my hands on one eventually also.
Yeah, definitely check it out if you find it for a good price. I think it's pretty cool, it looks a lot better live than any footage I've seen online (this was actually my first time playing a virtual boy).
I only played it for 20 minutes now but I had no headaches in that time and I can't wait to play more (especially Wario Land, that game looks kickass).
*EDIT after scott's response*
After 45 minute of playing Wario Land in a row, I will say I'm starting to feel a bit nauseated. Still no headaches though.