Maninblack, the differences between the ct-28v and the ct-29v are as follows:
1. The extra row of buttons above the input select buttons on the 29 are for the multi-room functions that the 28 does not have.
2. On the back of the 29 there are 3 rca connectors that are not on the 28. There are one pair which is the outputs for the multi-room feature and one single which is for the credit card remote that controls the multi-room feature.
Other than these few things I can't see any other differences between the two. One thing you should be aware of if you are considering a 29v is that you will only be able to use the mult-room feature if the 29v comes with the multi room module, cables, and credit card remote. That was something you could buy from Carver, but as you know has not been available for a long time. These multi-room kits are getting hard to find these days, but I still see them on ebay every once and awhile. I hope this info was what you needed, but if you need something more let me know.
Question: Do you know why turds are tapered on the ends? Answer: So your asshole doesn't slam shut..
Carver- SDA490t, SDA450, 2 TFM45's, TFM15, CT23, CT28v, CT27v, Linn Kaber speakers, Sunfire crm2's, PS Audio Statement speaker cables and I/C's, A.P.C. power