I like my DCOE, but would probably not switch over to it if I already had good SUs. I'd prefer either to the 32/36 or 38/38 Weber. If I was switching from a ZS, I imaging cost would be a deciding factor for me. I don't have the fear of the DCOE that a lot of folks do that have never used one The SUs are simpler to set up, but once the DCOE is tuned you'll probably never have to touch it. Of course, that initial tuning can be time consuming or expensive. One of the posters on another board installed a Japanese Weber clone called the OER. Looks just like a DCOE. His experience right out of the box was good - but a broken idle jet had his "mechanic" baffled for a while (the rear two cylinders weren't getting fuel). I suspect the mechanic is more to blame than the carb, since that should have been the first place he looked...instead of the last....