I have the B80 and it's holding up, also it's cheap enough that if it breaks I'll not be to worried as it's not crazy expensive. I enjoy the RBA that's included so it's well worth the price. When I get home I do the usual AIO dance, tank out and clean the contacts of all the condensation and use...
For science, very simple build. I cut inline with the middle of the juice intake, then 45 so it's nice and thin at the bottom and tuck in, juice up and bam, done! Really enjoy this tank on desserts.
The bridge is good, cannot do MTL but loose MTL to RDL. I'm using it for RDL now and it's very good. I'll wick later and post some scientific pics. I use it mostly left hand and I needed to adjust my grip a bit not to close the airflow on the back panel, but I'm already used to it