What's up guys, I'm Alex, and I'm 5'10", 160 lbs. I ski 85% park here in the 207 (Ice Coast) and I'm by no means that good at park. I'm a really proficient skier other places on the mountain, but my local hill is basically all park. For what I do, this boot is fantastic, if it fits your foot. I have been skiing with them for two full years, and I could not be happier. I did not have them heat molded, however it only took a few days for the liners to pack out and mold themselves to my foot.
After my time with them, I can say that they are by far the lightest boot I have used, and they are also the warmest. Not once has my foot gotten cold with wool socks on, and I can hardly feel that they are on my foot in terms of weight. Despite the light weight, they do not by any means feel cheap. The material used on the shell is very sturdy, and I have not had any problems. The only thing I would watch out for is that the sole is not rubber, so you can not replace the toe if it wears to the point that a shop won't mount bindings with them. The heel is rubber, though, so that can be replaced.
In terms of fit, the last is 98mm in the forefoot, so it is definitely on the narrower side. I have a narrow foot, and I was told by a fitter that I have a "Full Tilt Foot." People complaining about discomfort most likely bought the boots online, and gave no regard to how the boot would fit. These aren't a miracle boot or anything, they have to fit if you want them to function as they should.
Overall, I love this boot. The 6 flex works for me, as I like a softer feel without sacrificing too much control for when I leave the park. They'll get scratched up because of the white finish, but if you care, I feel very sorry for you. If you know you have a narrow foot, and you want a good park boot that can also take you elsewhere on the hill, keep an eye out for these. The new versions are the exact same thing with a new paint job.