If you are only getting one wheel, buy it.

If you think you've got the bike bug hardcore, get a cheap truing stand and spokewrench, and build your own! Follow Sheldon Brown's page, it has about as good of instructions as you'll find anywhere. Truing, tensioning, redishing and building your own wheels is very satisfying, and if you take your time, very effective.

I'm glad you got that hub mostly fixed. I'd say take your time finding a good deal on an IRO hub, and in the meantime, ride your current hub until it dies a terrible death.

peace,
sam