Just checked #4 and #6 are not available, #7 is 2.45% to 3.29% depending on who I'm paying, #4 is either not available or a small fee
I'd opt for #4 or #1, but have escrow for now. Fee would have to be pretty nominal versus gas to drive, but I am close to all the actual locations to pay.
Water and sewer go through the site that costs 3.29% but I charge those for the rewards...can only do that when the bill is <$500 though, which doesn't work for any of the tax bills.