Kingdom Hearts II question regarding swap magic

i have just imported kh fm+ and i have a slim ps2. on the swapmagic website it says u could get either the slim cover or magic switch of it. i was planning on gettting the slim cover since it seems easier than the magic switch but i was wondering if that would effect it? also is it better than magic switch? do i need anything else?

 

In my opinion, the magic keys/switch are MUCH better.

For one, the keys are fail-proof. If you use the flip-top cover--you'll have to unscrew your PS2 to install it.

The keys just pop right in--and they are easy to remove.

Also, the flip top cover is kind of ugly imo. XD

 

Order the Magic switch V.3. Its the easiest one.