I cannot comment on AFV Club, never seen a model of them.
As to Aoshima, they deliver decent injection molded kits that I would buy in a sealed box anytime.
Models are normally well researched; casting quality is very good, detail is good in representing the original but can be soft sometimes.
In comparison to other manufacturers (my experience is with 1:700 surface ships) I would put them below Dragon but on a par with Pit-Road.
- mobilis in mobili -