What all five of these new Macally cases for iPhone 4 have in common is their inclusion of a "screen cleaning sticky swipe," a little gray pad that uses "detachable residue free" adhesive to stick to the back of the device -- or something else -- and wipe the screen clean of fingerprints. From there, they differ: FlexFitP4 ($TBD) is a really nice frosted clear soft plastic case with integrated button protection, while MSuitP4 ($30) is a black silicone…
