I have the same dilemma as you do! When I check on Linked in or Glassdoor I see some comments that are not so good both in content and form. I worry when someone who struggles to write passable English writes code that is expected to protect me from all evils out there !
From a technology standpoint, I have not fully assessed where QH is, but from some of the comments on GD and LI, it does not appear to be very cutting edge. I need to dig in more to come to any conclusions.