I was looking to get an Aqualisa Axis Shower, either the concealed digital pumped shower or the Aqualisa Axis Concealed Thermo shower with a seperate pump. I would appreciate any advice. Right now I have a gravity fed system, immersion coil hot water cylinder. The cold water pressure is good but the hot water is low in all taps. I assume if I got the Axis Thermo with a seperate pump I could get a single impeller pump that would increase hot water pressure for the shower and possibly bath & basin. If I went with the Axis digital pumped then only the shower pressure would be okay, but not sure how it would affect an already good cold water pressure. Thanks!