So, I'm toying with the idea of gettin a Canon 50mm prime lens for my Rebel XT. As far as I can tell, I have 3 choices:

The f1.8 Mk II--really crappy build quality, but cheap and excellent visual quality

The f1.8 Mk I--same as above, but better build quality. Hard to find; there's a couple on eBay and it looks like they're going to cost more.

The f1.4--excellent build and image quality. 3-4x the price.

Whaddya think, Mark and the rest of y'all?

I am the Doctor, and THIS... is my SPOON!