I have pairs of the Boblov and Ultra-Clear and Benq. They all work with my benq th671st.
Comfort: Benq > Boblov > Ultra Clear. I find the Ultra-Clear a bit heavy.
Performance: Very little difference but the Benq are MAYBE slightly better. Other two about the same.
I would get the Boblov again over the Ultra-Clear. Lots of good reviews for the Ultra-Clear so they are liked however.
If I ever need to get another pair I would probably spring for the Benq even with the premium price. YMMV
When I watch I use the Benq unless I have guests and there are not enough.
EDIT: I have heard some newer extra bright DLP's might have issue with some non Benq glasses as the sensor is overloaded and some have to put a piece of tape on/overlap the sensor. I don't think this applies to the 2050a or other 1080p variants however. I also don't know which 3rd party glasses have this issue - research if you think it applies.
Last edited by fingersdlp; 07-23-2019 at 02:53 PM.