I haven't tried out any of the TFZ line yet, although I probably should. My main interest in the TNT is the adjustable sound due to it's design. My last big Chi-Fi purchase was 2 years ago with the Rose Tech Pudding, and I've been keeping more in the budget range since, as well as going heavy into earbuds. @Holypal Hmm, kind of tempted to try the IEMs, but my FB account had an issue and never got a response from them so it's pretty much dead. I've talked to him several times in the past, and he's mailed me who knows how many monks at this point. Hopefully wouldn't be too difficult to get a discount.