I feel the RL-ps will get louder, but I like the ID's for sure, for the price (just like Ryan said) are a great bargin for their performance, I have not heard head to head but the RL-p should have the Edge in SQ, but not by a great deal, honestly either set up is going to great, the ID's will be tight and accurate, and the RL-ps should hit the lower freq's a little stronger with smooth SQ, the direct comparo IDv3 vs RL-p is no match, the RL-p is much closer to IDMAX in performance IMO, both are going to be nice, but power requirements will be different