need help - Cd players

I recently was asking myself the same question. I had a AH!Tjoeb '99 in my main system for about two years (now still pulling duty in the bedroom) and like it just fine, especially for the price. The Tjoeb 2000 is similar in design, but built from a better stock Marantz player and, purportedly, sounds better than the '99. As I understand it (and I could be wrong alltogether), all of the Tjoebs use their tubes as a buffer on the output stage, instead of yanking the op-amps all together and replacing them with the tubes (which is how the Heart CD6000 does it). The Heart CD6000 starts with a much better stock Marantz player and the modifications and design concepts they use to modify it are a lot more aggressive than the Tjoeb (and it costs >$200 more for their efforts...). Many I have heard from consider the Heart CD6000 an upgrade from the Tjoeb, and, although I haven't had the chance to compare them, I was going to get one to compare myself when I decided to bite the bullet and get a Meridian 508 instead. I was also very tempted by the Nohr, but after doing all the reading I could, had tentatively settled on the idea of getting the Heart. Anyway, as I got the Meridian (which I love), I never had the chance to answer your (or my) particular question. From the literature I could find, I ended up most excited about the Heart in theory, but I really can't say how they all stack up sonically. I hope someone else has more in-system experience to offer -- I'd be interested to hear from those with more practical experience. Cheers.