Motor mounts

[dsim93]

I'm picking up a 240 tomorrow and the only thing I really couldn't stand on it were the solid motor mounts, the owner didn't know which ones they were but the whole car would shake quite a bit at idle, my question is should I replace them with stock motor mounts or is there another company that makes a better one? It's going to be my daily so I don't want something too harsh, I've heard mixed reviews about the Nismo ones and mixed reviews about the Circuit Sports one too, any help/suggestions are greatly appreciated!