@steveP with the POST it was blended immediately after the Apple/Coconut Pre on our last production run, and we didn't factor in the apple flavour coming through into the POST workout blend. Obviously we will be changing up our mixing order for the next run. With the sourness that you mentioned I would agree that compared to a protein dextrose only shake it is nowhere near as sweet, but with the amino stack it brings the sweetness down. This is our 1st production run of these products so are happy to take on board the feedback re taste and continue to try and improve them but we feel that considering the stacks on offer the taste is still pretty decent and results wise you should still see some great improvements.