The V10 may be a good cooler, but its definitely not a smart buy. It uses both heat pipes and thermoelectric cooling, which makes it very expensive and power hungry. Its the first hybrid cooler of its kind, and like the first of everything it has flaws, and in the future the technology will probably be corrected and optimized.
The V8 on the other hand is one of the best choices out there, for both price and performance.
I am running the Zalman CNPS 10X Performa and it is a heatsink/copper pipe setup and it is doing an excellent job.