[Towert7]

The HD25-1 II and K81 are roughly the same size.

 

[Mejilan]

The K81DJ is like 2x the size of the PX200s. I'm not looking to make a fashion statement, but I'm small and slight, and the K81DJs look like they're going to tip me over!

Edit - Oh! Audiocubes seem to have a store here in NYC, and they list the ES5 in stock. Same price as Amazon, but if I can go and see them in person...

I went to J&R to check out the K81DJs. I so wanted to buy them, but then I went to the booths upstairs and tried one on and... ugh.

 

[Mejilan]

I did a search and only found 1 solid, in-depth "vs" review of the ES5. Markl, I believe, found them to be quite a step up from the PX200. Considering it's double the price, I would hope so. He also indicated that it had superior build quality, which is of particular interest to me, but he didn't really discuss the wiring and insulation. That's the PX200's big weak point, in my opinion (not the frame), so here's hoping that the ES5's wiring is more durable!