Matt, I would have to say yes to all of the above. Of the 4 DA engines I have owned they are ran very smoothly, very reliable and satisfied my picky needs. By comparison the one DLE that I owned and the last 3W I owned fell short of my expectations. In the past when I was competing on more a regular basis I had a relationship with DA and got news straight from Dave Johnson. I know how much R&D they put into their engines. That doesn't always mean they get it 100% right during the early life of a new engine but they always back what they send out the door. Any improvements made on the engine are installed on all engines out in the world free of charge. I can't say any other manufacturer does that. I remember talking to Dave at the 2002 TOC when Chip was running the 200. He was very concerned about the crank holding together. These days over 75% of IMAC advanced and unlimited pilots are using the 200. At least in my region that is. I guess you could consider me bias to DA but that's only because they earned my loyalty.