Hi Rajesh,
Only thing I can say about powering Cervin Vega , that it requires powerful amp.
And dont be misjudged by power ratings of the amplifier. A high current , 100 w amp may drive better your cervin Vegas than 150 W low current amp.
So keep in mind high current amp and start searching on net.
As per my knowledge best value for money high currents amps
would be Parasound Halo amps...
cheers
Dheeraj