Very comfortable but with minor issues.

Triangular lever lock tab fell off (not broken, can probably fix)
Chair sinks over time. Have to raise again every so often.
Arms don't feel as sturdy as expected when lowering myself into the chair. They push out but as of yet haven't caused any issues. 

I have enjoyed the ability to kick back with the foot rest as a big boy and not feel like I was going to tip over backwards.