Has anyone used a Hog 1st stage with an Apeks 2nd? I currently have an ATX 200 with a 100 octo. I am looking to transition to doubles and want to get matching 1st stages but I don't want to add another Apeks FSR 1st. I really like the price and the 5th port on the Hog cold water 1st stages but I'm not sure about mixing brands. I have heard that theses regs are pretty similar to the Apeks DS4/T though so maybe they would be a good match.... I don't know. Any advice would be great.