FINALLY got myself a new pair of good headphones for use on the go. Figured I'd start of with them, since I the ones I had broke (asshat accidentally hit them and they fell off the table and broke, usable if I buy a 2k glue). I decided on the Sennheiser PXC550's (between them and the Sony MDR1000), since they were about 100$ off in my country, and they were within what I wanted to spend on bluetooth headphones, and I gotta say, they are really nice, they're my first 'quality'/audiophile (not really audiophile, but I am gonna call them that). Everything about them so far just seems like it's top quality, even the packaging.
About sound, out of the box (no burn in) they are quite boring to listen to (without effects selected), but with the right setup, they're good, when ANC is enabled it would seem like they turn a bit more bassy, something you can adjust in the Captune app. Personally I listen to them without changing anything in the equalizer, but did fiddle with the fx's, basically the movie preset, but with less bass.
So far positives:
Everything so far has been running smoothly, no hiccups, turn on and are ready to go fast too.
Am well satisfied with the sound quality for closed-back BT headphones
So far negatives:
When wearing them for a longer period, -because of the ANC, the earpads seem to be kinda tight (to the point where they're nearly air-proof), so I can actually feel the pressure pressing in my eardrums, kinda like you're diving. So far I've just been readjusting them every now and then to balance out the pressure, anybody reckon poking a tiny hole in the earpads would be enough to balance out the pressure, or does it have to be like that for the ANC to actually do anything effectively.
Because of the touch panel on the side, you easily leave fingerprint visible for everyone to look at.
Would've like a manual power button instead of the 'automatic' when you flip the right cup.
Next on the list on my path into the audiophile world is:
Stationary headphones (where I'm considering the HD599's)
Entrance Dac/Amp
Well it's gonna be while before that's gonna happen, since I've got some paint jobs to pay for soon 
Thank you that one guy who actually took your time to read my bullcrap, much appreciated 