From an opinion standpoint ( he slowly climbs onto his soapbox... ) I have a moral problem with purchasing ANY knock-off, clone, or other offspring of the theft of another's I.P. or hard-earned good reputation.

That said, no matter how good it MAY prove to be (or not) I'd never consider it, as I'd always feel like I was riding on some pirated plunder. Thats just not how I want to roll.
( he slowly climbs offa his soapbox )

YMMV