Bypass mode is pretty good on the RSQ. Acts just like a mech plus handy read-out on screen...so there's that.
I'm using a .16 build on mine at 68w with the dead rabbit, a few issues I've had were the magnets came out of the battery panel so I had to glue those back in, a little battery door rattle that I fixed by using a little tape on the edge of the panel & finally when installing the bottle I have to use my tweezers to grip and pull the tubing up the pipe. I am a fan of the device but I haven't looked near it since I picked up the gbox.