PG27UCDM 2K Performance

Hi,

I am looking for advice to choose between PG27UCDM and PG32UCDM. I queued up already for PG27UCDM (in my country there's only one distributor), but I still can opt out just in case.

My pc is not really strong yet for 4k, so I was going to use it in 2k mode for a while before I upgrade my graphics, that's another plus for 27" considering density and the fact that I'm sitting really close to it. I'm still not sure whether to choose 27 or 32 variant. I love tech used in 27 and I believe is superior in every way than 32 except... size? Before that I went form 42-inch tv down to 27 monitor. Hate being it too big but maybe 32 is better despite flaws, does someone have any experience with both sizes and maybe some other recommendations? And yea I went to store beforehand to look up sizes, and that told me nothing except the fact that 32 looks nicer (bigger).