I love my Niche Zero and my Lelit Elizabeth. I bought the Niche to up the game with espresso while having a single grinder for morning drip coffee. I have found that I have to RDT the drip coffee with the coarser grind and volume so it does not make a mess, but do not have to do so for the espresso grind. Now, after the morning drip grind with the ring at around “70” or so (no actual mark on the Niche, but landmarks on the machine) I keep the motor running and dial back to around 13 or so for my espresso. So far so good. I do find though that the first espresso shot retains around 0.4 gm, and runs too fast. The second shot is perfect with very little retention. So, there must be some retention with the RDT and the coarser grind from the morning drip. I have gone to purging a few grams of coffee through the Niche at the finer espresso setting, and once I do that the first shot and second shot are totally consistent. Now that I have had the Niche for a number of months I may try to go without RDT for the drip and see how that works out. I hate to waste even the few grams of coffee, but definitely want that first shot to be great!