I was corresponding with one of the US Coltri resellers while getting quotes. The rep seemed familiar with the Daystate 110, and said he recommended the MCH6 over the daystate equivalent MCH3 (not quite equivalent - the MCH3 comes with a filter that the Daystate lacks, factoring in the price of the filter their price was similar to the Daystate) because:
"The MCH-3 is a three cylinder compressor that came out a year ago. The original compressor is the MCH-6 four stage compressor. MCH6 is been around for about 30 years. They removed one of the stages and made it three stage. The fur stage had a rotary design that balanced the load on the crank. Four stages on a small compressor is better than three."
I have seen some posts somewhere that stated that the Daystate 110 was 4 stage, some say 3 stage, and some say it has been both in different revisions. If this is true, what is currently shipping?