Great amp Mtrot! I have both 2.4's and 5's right now. I have compared the two speakers side by side driven by the Krell FPB300, and of course the 5's are full range with 24 hz bass, so they outperform the 2.4's, but the smaller speakers hold up pretty well. The 2.4's image precisely, with a broad soundstage and detailed presentation. I use the 2.4's with the HT as mains, but only because the 5's are so strong, with a huge soundstage. I wish I had a room they could set up with 5' on rear and sides, but can't. The 5A's are more of a full range speaker with lower base than the 2.4's, so that's a fairly easy call, but these 5's are something. I couldn't make the call right now. For 3k, which is what I paid, the 5's or 5i's are a killer deal if you have the amplification, and you do! I have no reason to try some 7.2's, as Thiel dealers have admitted to me that if you can set them up right, with the right power, the 5's are the best Thiel made..I'm waiting for delivery of a CAT 660.2 I found on Audiogon at Saturday Audio ...Stay tuned!