What is the best way to set up ach payment processing for utility billing? | Payment Gods Forum

Hey guys, so we're a small utility company, been around for about 5 years, and honestly, our paper invoicing and check payments are killing us. I'm trying to figure out what's the best way to set up ACH payment processing for utility billing? It feels like there are so many options out there, and I don't want to get locked into something that's not right for our needs.