Coming from a big G23 supporter, the G33 upgrades and improves upon every feature. The clarity of the red dot is now customizable with the diopter adjustment...no more fuzzy dot. The adjustments do not effect the focus of the background. Its lighter, smaller and has a better field of view than the G23. The mount is excellent quality and they really nailed the slap to side feature. Its easy to move to the side but extremely unlikely it will move unintentionally. The only concern I have is that the glass on the 'eye side' is very exposed. This may have been necessary for the eye relief improvement, but it seems to be asking for scratches. I'd recommend this to anyone...but you might want to invest in something to cover the lenses when not being used.
Pros: Upgrades and improvements without extra cost
Cons: NONE
This review was written in the old system and had content requirements that are different than reviews written today.