This: https://www.amazon.com/gp/product/B008HQ2N9K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
It's a beast. The low profile lets me keep the tray close to the ground - which is an issue because I have height limitations. It's quiet and, thus far, reliable. And it has enough head height to move the drainage a good distance.
Well worth the money. I tried to buy anything recommended by coco for cannabis through their affiliate links to say "thanks for doing the work." But the float switch pump he had was twice as much.
This low profile one has been working well for 3 grows (12 plants) so far
Diversitech Corporation CP-22LP Condensate Pump Lp 1.6 Gpm https://www.amazon.com/dp/B008HQ2N9K/ref=cm_sw_r_cp_api_glt_i_VFB9DHGQW2NFX3HY5HJ2?_encoding=UTF8&psc=1
There is an awesome DIY fertigating setup detailed at coco for cannabis for both the watering and drainage The only thing I changed was I use a low profile furnace condensate pump for extricating the runoff