I was interested in the Taction Kannons but the price, shipping and customs duty combined will be killer to the UK so I decided to get old king. Funny thing was, when I was in Japan in 2016 I could not find a single store carrying the SZ-2000 available for demoing. I managed to find a used SZ2000 (LIVE BEAT variant, not the European Z SERIES version) for about 70 GBP, swapped out the pads for the Brainwavz memory foam pads (have the sheepskin ones on order) and it definitely does have a nice bass hit to it simply coming out of my phone (no amp as my Cayin C5's battery has died on me plus it feels nice not carrying anything extra). On a very quick and dirty comparison to my XB1000 (also on my phone, no amp), I can certainly notice the open design of the XB1000 more than I used to but I somehow feel the bass on the XB1000 hits ever so slightly harder (here's where I'm hoping the sheepskin pads will change this). The sound of the SZ2000 seems to be more fun though despite the slight veil. The headband on the SZ2000 has got to be the nicest I've ever used, the XB1000 really lacks padding and hurts my head after a while. I'm still keeping my XB1000 though, the openness along with the bass hit isn't really something I've really come across in my very limited search. My only gripes is that it's rather heavy (makes the XB1000 feel featherweight in comparison) and the ear cups don't swivel flat. Has the SZ-2000 been discontinued? The prices for it seem to have hiked a lot. It's a great shame if it has been discontinued because this thing is pretty awesome.