Replacing or removing a shower pump?

I currently have a Grundfos Super Selectric shower pump, type STC 1.5 C. It works fine in terms of water pressure, but it's very noisy (similar noise level to running a hoover) so I need to either replace it with a quiet pump or remove it completely and replace the shower with an electric one (or similar). We have a cold water talk in the loft and a hot water tank in the cupboard next to the pump. Any advice would be appreciated! Ideally we want to still have a good level of water pressure when we run the shower, but the noise issue is the main concern at the moment. Thank you!