I looked around too and figured the best option was a Chillzilla, but like a cheap ass I wanted to buy one second hand. Too bad no one ever sells them.
After waiting too long I went with this;
The DudaDiesel B3-23A 40 plate beer wort chiller. I have well water in NH that is cold! And my house pressure is 35ish psi, that cools 10 gallons of boiling wort as fast as my March pump can turn it over. I feel like the March pump is no challenge for it at all.
After I'm done With my brew day I cycle water through the plate chiller wort side to flush anything out, then I cycle my sanitizing water through, maybe 6 to 10 gallons worth. After that I just let it sit. At the start of brew day I boil around 5 gallons just to clean and sanitize everything, that water sent through the chiller has always came out clear for me and left me happy enough to feel it was clear and ready.