I'm not trying to make your decision more difficult but if you are considering purchasing an apex and vortech, don't forget to look into tunzes such as 6055, 6095. They are models that are fully controllable by the apex. All you would need it to purchase a cable that is able to connect to the apex ports. I am currently using to 6095s and I am able to create random flows and use the feed mode functions to stop or slow pumps at specific time periods. I love them I switched from an mp40 and mp10 and the tunzes are dead silent in comparison