>>345891736
I use the default earcups, though I 3D printed a pair of https://www.thingiverse.com/thing:2896509 to improve the seal a bit. I am medically tone deaf so you shouldn't take anything I say on this matter seriously, but with those the difference between the speakers wasn't really that great. It takes a bit more effort to slip the VP2 on compared to off ear speakers but they don't bother me otherwise. I couldn't stand the mic though, I got a mod mic+a usb-c adapter and fastened it on. 

>>345892643
2 base stations. You can get the 1.0 Base Stations for less or pay more for the 2.0 base stations from either Valve or HTC.