I have had wp40 , wp60, rw 25 and mp40. The mp40 is the best out there. They have wide flow and are very durable. They are upgradable and always have replacement parts. They also have a nice battery back up available. That being said I ended selling mine as my tank is too close to the wall on one side so I could not fit the large magnet on one side of my tank. So I ended up trying the RW pumps. They have a nice flow and can connect to each other (wireless ) they do push some water and in certain modes they can push a wave that can take the water out of my 180. So if you go this route you need to adjust wave strength and timing before selecting else mode or you might have a mess on your hands.