I found an older post that was very helpful on the crystal light in AH.  My G2 died.
Is crystal light from pimax still aa good choice for AH?  Lot of bad press from about a year ago.
I do Iracing and AH.
I went from the G2 to the Pimax OG Crystal (same optical engine as the Crystal light only with eye-tracking) a couple years ago and flew some sessions in AH with it.  Comparing the two I found the Crystal to be clearer, has a bigger sweet spot, less glare, and better contrast (night actually looks like night and not just a gray/black).  It is really the cheapest upgrade/replacement to the G2.
I think the Pimax takes a little more tweaking than the G2 to get the most from it, but it is a very nice improvement.
Over the last year Pimax has done A LOT to improve customer service and quality control.  I have several friends that also went to the Crystal from the G2 and everyone of them felt it was worth it.
I would also suggest getting the free Mbucchia quadviews addon.  Even though the Light and G2 do not have eye tracking, the quadviews gives you the highest resolution in the sweet spot and down grades the resolution in your peripheral.  The end result is no noticeable degradation of clarity, but a boost in computer VR performance of 20% to 40%. 
Hope this helps.