I also have a Whammy on my Guardian, another issue is that it takes a bit of time to tune 'properly'. That is; finding the correct place to serve the pull cord, after drawing back andletting downthe string many times over.
As MOmightymite said, the unwanted sound coming from the fork only gives need for improvemenrt down the road, butfork tamers willhelp, but you must first install these before finding center arrow level with the hole for the rest. Otherwise if installed after, the tamers would raise the arrow above nock level (90 degrees).

Having used a few different drop away rest already, I would say the easiest (for me) is the Trophy Ridge Drop Zone (Guide Series). Thisrest is very quiet, comes withthe arrow holder and works very well.
The Muzzy rest is another good rest, everyone will have their own choice and they will all work.
Otherwise the Whammy restdoes work well, but you will have a bit on tinkering to do first (more that you will for other drop away rest). Serving the cord to the cable also has to be condidered, so it doesn't rub against the down cable.