I posed a similar question on the Asylum several months ago. The nice thing about this is that i did receive very good advice from all concerned. Proof that those that enjoy this hobby may be "snobs" to those that aren't "hi-enders" but are quite helpful to those that are willing to try : )
I started to do my own research taking those suggestions into consideration. Between various info on the web and talking to people that owned various models and their experience, i was able to make some pretty logical conclusions. My "pecking order" of transports reflects the same findings that most of the contributors to that thread suggested. If you want to take a look at that thread for yourself, the address is below.
As it is, i've been using a Delta with several different DAC's and tried other "reasonably priced" transports before. I was using a Delta with an Alpha at the time of my post to the Asylum but wanted to upgrade. My experience is that the Delta works reasonably well and is a good match with the Millennium II and all of the CAL DAC's. It might not work quite as well with other units. Like any other component, you may run across situations that are not optimum combo's. I have run the Delta with a few other DAC's and never really had any complaints. Then again, those with better hearing / higher resolution systems may offer greater insight than i.
With that in mind, I would look into a CAL Delta ($300-$400), Theta Pearl ($450-$650) or Wadia WT-3200 ($700-$900). While the Pearl is more money, i believe it to be a better performer than the Delta. Besides, it is much more of a cosmetic match for the Millennium than the Delta ( if you worry about such things ). In turn, i think that the Wadia is probably better than the Pearl but it too climbs even higher in price.
Depending on how high up the ladder you want to go, performance does escalate with price ( at least in this specific case ). Sometimes you'll get lucky and stumble across a good deal on one of these or something similar though. If you're patient and keep looking, you can build a KILLER system for pennies on the dollar. Whatever you do though, don't under-estimate the importance that a decent digital cable will play. You should be able to find something quite suitable on the used market for $60 - $150.
In my specific case, i recently stumbled across a very expensive transport ($5000) that is super low jitter and was a PHENOMENAL deal ($450 ). Needless to say, a human could not have whipped out their wallet any faster than i did. It will be replacing a Delta in one of my systems and is proof that God still loves me : )
While the Delta can be found on CAL's website, the Pearl is hard to find on Theta's. I've also included a link for that. There are more than a few circulating around with a black faceplate, so keep that in mind. The Wadia is older and also hard to find information out about, but i was able to find one ( not so good ) picture for you. You'll have to cut and paste the address though since it is SO long. Hope this helps... Sean
Here's a link to the thread i was talking about:
Here's a link to the Theta Pearl:
Here's a link to what the Wadia looks like. You need the WHOLE thing, so make sure you get it ALL: