Corsair RM or HX

[smr]

I'm going to buy a Corsair PSU, wondering whether the RM will suffice or whether it's worth spending more on the HX - I'll be buying the 12700K and probably adding a midrange GFX Card at some point, with a couple of SSDs and 32GB RAM.

I'm wondering whether to buy an HX or RM and at what kind of wattage, would 650W suffice?

 

[smr]

Thanks for the replies guys, I missed the boat on the Seasonic I think - appears to have gone back up to £110.