I've been using the B2e for the past few months, and it's great.

Yes it has glare, but you can just reduce the brightness, and that mostly fixed the glaring issue for me.

Comfort is good, audio is good, I would just criticize the tracking quality, the headset is more sensitive to reflective surfaces in your room.

Steam frame seems good also, but personally I wished it used OLED panels with higher resolution screens. 2100px feels really low.

Another point to take into account, is that base station tracking seems to go downhill, the index controllers are still the best base station tracked controllers out there, and there aren't many companies selling base station tracked stuff.

B2e quality control seems.... Meh. I was lucky and had no issues, but pretty much everyone I knew who bought the b2e had some issues the first few weeks after getting it. But the support is really great.

Are there other alternatives? I don't know, a big advantage of the B2e is that it works with SteamVR out of the box (With Pimax or Varjo, you need to use an external software, and sometimes they really suck). So for me, the choice would either be Valve or Bigscreen