One that I am really enjoying right now is the Trinity V3tronix US1 Styled RDA (I have SKU 5796700 but there are others.)

I have converted it with a FDV M3 pin and am using it on Coppervape BF mod. The RDA (this sku) actually measures 24.7 at the base, 25.5mm at its widest point(just below glass.) Can't figure out how to remove the glass but hopefully will never need to. With FDV pin the base sticks up some (I should file it down) but the outer ring slides down and covers the gap between the base and the mod so it looks really nice.

Good vape with adjustable airflow and thick glass top.