I just got ES isolators. I searched for other options (50 bucks is a lot [to me] for isolators) and the Prothanes can be found for about 10 bucks cheaper for a set (F/R).
I wouldnt want to run without isolators - the NVH could be worse (some say it is, some say it isnt). If this is a DD, I'd use them. I'm also not big on metal-on-metal contact in the suspension.
Good luck.