Comparison tables for ground source heat pumps and MHVR?


We’re about to start a self build and will be installing a ground source heat pump as well as an MVHR system.

I’ve obviously trawled through loads of websites from the usual suspects but is there an independent web site which sets out all the various parameters (especially COP for GSHP) for the multitude of solutions out there?

Even a sensible review site of the pros and cons would be a help and I have searched but can’t find anything.

If not is anyone interested in a subgroup that reports on experiences with GSHPs and MVHRs?