The Airbot Ori32 4 in 1 ESC is the big brother of the Ori. It is a great choice for all your 20x20mm micro quad needs. It has fairly large solder pads, comes with a heatsink, BLHELI_32 supporting Dshot 1200 and provides 25A continuous current. It weighs in at 7.9g.
Unfortunately it comes without wires or capacitor, so do not forget to order those too.