Which TADs are you interested in, letitbe? TADs are excellent modern speakers, that is, musical but uncolored, very transparent.
Their beryllium tweeter reproduces sound way past the range of human hearing, so there’s no softening of high frequencies. If your system or a recording is bright, you’ll hear it. On the other hand, if there are beautiful, delicate details up there on the recording, you’ll hear them too.
The midrange driver is beryllium in the Reference line and magnesium in the Evolution line. So again, there’s no softening or pleasant coloration going on, but they’re not harsh or metallic sounding either. They cleanly reproduce what they’re fed.
You don’t have to listen to only audiophile records, they sound good on all kinds of music, but if you listen to a lot of badly produced pop or badly produced whatever, these are probably not what you’re looking for.
They always get great reviews, most recently the Compact Evolution Ones in the June Stereophile. But keep in mind that most reviewers probably have their electronics in good listening order. It’s their job after all.
So I like them but I know that there are people for whom they are not warm, lush or pretty enough sounding.
So which model are you looking at? What kind of sound are you looking for?