I searched and don't see this posted, and thought I would share.
Currently same price for Black or White.
IMO worth the extra cash over the less powerful 25W model posted. That one does not have high speed full rate charging on all ports-just on 2 out of 5, and less overall charging at the same time capability @5 amps total vs 8 amps total on the 40W model. This means you can charge more items at once at a higher rate.
I bought and use 3 of the original models of the 40W and am very happy with it. I also have one of the 25W models and it is good except I have to pay attention to which port I plug things into to make sure I get full speed charging.
This thread is the latest updated model. The original model has been on sale a few times lately as low as $17.99, but currently is $25.99 .