The new anbernic releases do seem to keep him busy! I am hoping to see one on a RG406H soon as that would be one worth picking up for me I think (assuming it is just the RG406V in a horizontal form factor with the better analog sticks)The 406V is not released yet.
A great youtube channel to check out is Retro Game Corps. He reviews a lot of the units on there and shows you how to set them all up.