I've seen that stuff in the store as well... but the fact that I don't like the idea of overspray landing on my paint/wax keeps me away from products like that. Sure it may be faster and easier, but whats the goal here... speed or finger-busting-hand-applied-quality?
Of course if you're going to spray a rag and wipe anyway... well, whatever floats your boat. I can't attest to the quality of restoration that the Meguier's stuff provides compared to products like Black Wow and Back to Black.