Subject says it all.

I've heard both sides of the argument and still can't figure out which ones are more valuable.

Is it the First Edition cards which are, obviously, the first ever printed cards? Or is it the Shadowless second printing which were discarded long ago due to a perceived defect and fakeness?

Also, if anyone knows WHERE THE HELL CAN I GET MY HANDS ON SOME FOR LESS THAN 50 GOD DAMN DOLLARS A PACK.

Thank you.