I've been searching for the "right" LongEz for too long. I've come across many that were heavy. There is one plane in particular that is stunning and with decent panel and one of the most clean engine installs I've seen. It weighs 985 pounds! The owner loves it, babies it, and I'm sure it flies wonderfully, for him.
I guess it all depends on what particular mix of attributes makes a nice airplane for you. I can easily see some combination of good price, nice finish, Ok engine, easy availability, trust in seller/builder, etc that could rightfully justify buying a heavier ship. Just know that your value system or judgement criteria is different from that promoted in the Canard Pusher. The Canard Pusher had a charter to defend and promote the design. No doubt, a lighter ship will more closely perform like the personal jet fighter it was designed to be. However, not every buyer can get the perfectly light ship.
From what I have gathered, a heavy ship will fly more like a U-Haul than a Ferrari, if they could fly ;-) The major penalty for weight is climb rate and range. However, my guess is that almost any LongEz will be more thrilling to fly than a Cessna 172. I would like someone else to endorse this idea.