I'm in the market for a new Linear Piston Air Pump and have been looking at jehmcos which come with a big price tag. Are they worth it? Is there a better or comparable brand out there? Are linear pistons all they are cracked up to be or will I save money by getting a diaphragm air pump. I don't have many tanks that I'd be running off it currently but plan on and have been expanding slowly, hopefully getting to the point of a full fledged fish room eventually. I basically don't want to have to keep upgrading. Could any of you veterans point me in the right direction?