I have the Andreja Premium with the no-burn arm. I did "downgrade" to a
slower steam tip using the 10mm adapter, and I find it much easier to get microfoam now. I only steam 4oz of milk at a time in a 12oz pitcher, and the stock no-burn tip practically blows the milk out of the pitcher and introduces fairly large bubbles. The smaller steam tip introduces air more gently and brings the milk up to temp in less than 30 seconds.
The milk does not stick to the no-burn arm, but it does stick to the replacement tip. A wet microfiber cloth works much better than a dry one. I do miss the easy cleanup of the stock no-burn tip.
I would strongly recommend getting the
Steam Arm Gasket if you purchase the
8mm to 10mm adapter. The lower O-ring that comes with the adapter is not very strong. If you don't tighten the adapter just right, steam pressure will tear the O-ring -- happened to me on the first day. The teflon gasket is practically indestructible and sits more flush with the tip. Chris really should ship the adapter with the teflon gasket instead of the O-ring.
One oddity using the adapter and slower steam tip... the steam is wetter when first opening and closing the valve... I do this a couple of times to clear moisture before steaming. Whereas the no-burn setup doesn't sputter at all, and the steam turns on and off more "crisply."