Update on the pump differences between 0823 and 1023. Supplier got back to me and said only difference in pumps is air volume output. He said the 1023 was such a popular pump they bought them in larger volumes and got better pricing. They passed the better discounts on to the customer and that is why they could sell a 1023 cheaper than an 0823.
So for my purpose, the 1023 is a no brainer.
