I liked my Singer 111W155 so much I figured it needed a friend.
Double needle sewing machine all of $350 delivered.
The 111W has the much more powerful Compound feed: feed dog, needle feed and vibrating foot. The 112W is also a compound feed, but only feed dog and needle feed.
Pro tip: Any combination of two or more feed type is 'compound feed'.
I may sell the 111W... its feed system is popular with upholsterers, but lack of reverse is a big drawback... to me no reverse is not a big deal... but I don't do it for a living (yet... bwaa haa haa)