I have had the droid 1 with the sd card and now the galaxy nexus with mtp (internal memory). They both have ups and downs to them but my opinion is that mtp is better. Heres a comparison. Sd Card- Pros -Quicker Speeds (for moving files and folders in and out) -External memory meaning you can take the sd card out and put it in a different phone. -can put files onto the card without the phone -Cons -Annoying "waiting for sd card" lag at the start -annoying to enable mass usb storage Mtp (internal memory)-Pros -Quick to set up and put files in. Only a connection needed -Lagless Cons -Unbelievably slow in transfering large files -dont think its possible to open up wiht cwk Opinions?