[Justintoxicated]

Here is my opinion
In the titan with the tweeters in the dash the Iridiums really shine.

I have compared them to CDT EU series 3 ways with ti tweeters, and this guy had them in all custom fiberlassed pods and imaged properly and they did not hold a candle to the DLS. The guy even agreed and is switching to DLS 3 ways. These were not the 07's I would like to listen to these, but if they are like the EU's I would not consider them for my taste.

The Diamonds did not seem to make nearly as much midbass and the tweeters were a bit brighter (silk tweeters) on my friends diamond hexes but they still sounded very good for the price. Mabe he will chime in here. They were up there with some CDT IMO, I liekd them better than the EU series I heard, maybe because of the way they are imaged in in teh titan, or maybe it's the silk tweeters vs ti, plus the price difference is unreal. They did not sound as natural and smooth as the DLS which is what I am after in a SQ system. I my opinion the iridims were well worth the difference in price, they image great installed in stock locations in the titan especialy if you have time alignment.

Good luck finding iridiums for $400 they retail WAY over that.
I have not heard the focals, I hear those tweeters are also bright but maybe not on the k2p? I can't really comment on them. I would like to hear these also.

If your not going to seal and deaden your doors just get the diamonds, after getting into a high quality speaker like the diamond the install is going to make the difference.

I would not even consider Aluminum or Titanium tweeters, they just dount blend as well or seem more harsh to me, but everyone has different taste.
oh

yea I would recomend you post this in a car audio forum. Many of those guys owned or listened to all of these and they can give you unbiased opinions

Also rememebr the Diamonds require more power than the DLS to get loud not sure on the others, but the amp might cost a little more.