The monoprice one has the highest output so it'll probably charge the fastest.
I just bought one of these on ebay for $1.50 direct from China (it's the exact same one)
http://www.ebay.com/itm/Black-2-1am...Accessories&hash=item3cc74de761#ht_2395wt_914
It's a 1amp output which is still higher than the moto one.
The Monoprice ones from my experience are not really 1amp as they say. Mine definitely was not 1amp. That may not be the case with all the ones that they carry, just my experience with the particular ones I received. The name brands are more likely to be closer to what they are rated. I understand that is not always the case, but if it is a generic brand, I tend take the rating with a grain of salt.