Well, we are not expert on that, and it’s something you have to decide — you may want to consult with a gardener or landscaper or someone at home improvement stores. What I know is that 24VAC valves are the most common type, which you can buy online or at home improvement stores. Latching valves are less common, a lot of latching valves I’ve seen are for connecting to garden hoses, but there are latching solenoids which can replace 24VAC solenoids so that they can use the same valve body. DC non-latching valves are probably even less common than latching.