I received the Ocho yesterday and I am smoking it as I type. The stem is fairly comfortable, not as hard as some acrylic ones in my collection but not as comfortable as my vulcanite. The button design is very good, it clenches easily and since the pipe is so light, I am enjoying it. I had forgotten how well a Castello smokes( I now remember why I used to collect them), the large airway makes it smoke itself which is what I love about my artisan pipes. It is smoking cool and dry and it will never need a pipe cleaner to soak up excess moisture. The pipe was immaculate and no hint of a previous ghost. I am smoking some Astleys no. 44 Dark Flake and it tastes great. I am very happy that I bought this and the grain is even prettier in person. This will not be my last Castello, they are just too good a value to pass up.
If anyone has never smoked a Castello, I highly recommend them, they are in my opinion the best smoking factory pipe on the market.