Nah, you're good. Headphones see a lot of mileage and can be expensive so it's good to be picky and get something that really does it for you.
I wish I could tell you more about them, but I won't get a set until I need a portable set. But I did hear that they hit harder than thx00, and at about 80% of sz2k without a lot of amping or eq needed.
Not sure if the pads are replaceable or not, but my source on them did say comfort is one thing they're lacking.
Plastic like that is a bit scary too. I started basshead life with beats studio about 7 years ago. Similar build of course, but I'd put a lot more trust into the yamaha durability. They make dirtbikes after all haha. Any way, the build quality and comfort on those beats were absolute $h1t, but I didn't know any better. The headband cracked in a year or so.
I forgot if/what you said about amping and eq. Thats why i said pro500 initially...
But if it's possible for you, I'd also go for sz1k, hm5 pleather pads, and a cayin c5. Should be pretty close price wise to your budget and big and comfy.