BK,
I had a very similar question a few weeks back, actually exactly one week ago. I was unsure whether to go with the KG 2.2, KV-2, KV-3, or the KSCC1. I purchased my mains (KG 4's) and rears (KG 1.2's) new. At that time a center channel was really not around, and was really never a concern. Based on DD and Diggs suggestions, they told me to hold out for the KV 3, since there is no "perfect match". A bit apprehensive to buy used, I found one used on ebay. So I bought it, at a very reasonable price. The gentleman was moving and didn't have room for it so I lucked out. It has made such a huge difference in my HT system I cannot even begin to explain. You hear everything...and brings a huge smile to your face and sends chills up your back. It is unbelievable what a difference it makes. My father who has a much higher end HT system was almost jealous as to what his ears had heard. So to answer your question, yes hold out for the KV 3, one appears about every other week or so on ebay, just check sellers feedback, and ask him what else he has hooked up to it. Usually if it is higher end, he must have spent a good amount of money on it and most probably took good care of it. Also ask if they have original manuals and box, could indicate that he purchased it new and not used. Best of luck and hold out for the KV 3.