I voted for the id's, im using them and they sound super duper good.So from the poll which people didn't really use to much, i'm gonna go with the id's. There a lot cheaper and I guess they are just that awesome for the price.
Thats is a pretty big difference in money spent between the ID's and Hertz, Try to listen to the comps if possible if not i would get the ID's you should like them and have saved some good money. If by a slim chance you dont like the ID's sell them on the FS section and you should be able to get most our money back.The hertz would be about 270 a pair shipped while the id about 180.00. So i can spend 360 on id's or 540 for hertz.