I’ll chime in since I’ve owned the LCD2 and currently own an LCD4 (730 grams) which is one of the heaviest headphones available. When I initially got the LCD2 the weight was also a concern but you eventually get used to it.

The suspension strap and earpads for Audeze are very comfortable. It fits very snug and you can tweak the clamping force by tightening or loosening the screws under the yokes. The weight concern is really one of those things where you won’t know how much it will bother you til you actually try. I’d give it several weeks of long listening sessions before making a final judgment call.

The main thing that Audeze owners complain about is the strap stretching/loosening over time and eventually touching the steel/carbon fiber. This creates a hotspot on your head making it uncomfortable. There’s ways around this by either using a Zmf pilot pad, shortening the strap yourself with some handy work or getting a new strap. In my case I shortened the leather strap on my 4s and its been great.

Ultimately, Audeze makes amazing planars that are definitely worth a try. I’d recommend buying used in excellent condition, and if by chance the weight is a major issue for you, sell it without taking too much of a loss.