The RG351V is certainly a beast. I remember when people said the RGB20 was big (lol). The RG351V obviously knocks the RGB20 out of the water in every measurable category other than perhaps looks. Aesthetics-wise the RGB20 is more eye catching. It's a true shame the build quality was not very good. One thing I do like about the RGB20 that I wish Anbernic had done was the offset thumb-stick. There's really no competition between these two but I thought I'd post a size comparison shot. Despite being a low quality build and other issues I actually plan to still use the RGB20 a bit.