Hi Keithmundy,
Sorry to bring this up, but only two of the kits mentioned so far will do your Vandy 5's the least bit of justice - the Velleman K4040 at 90wpc and the Transcendant BEAST at 165 wpc. In fact, the Welborne, Audio Note, other Transcendants, Decware, and Bottlehead amps should never even be considered.
My brother has Vandy 3A Sigs and they are a demanding impedence match. Even though the 5's have a built in 400 watt subwoofer amp, the 3 other drivers are still rated at 87dB w/ an impedence that fluctuates to 4 ohms.
You really want to look for an amplifier in the 75+ wpc range with a stiff power supply to do these speakers any justice. If it was me, I'd go 100+ wpc and there simply aren't many kits in that range.
Hell, the 5's have been known to cause the Audio Research 100.2 to run out of gas on large orchestral works. And that is a serious high-current solid state amp. My brother uses it to run his 3A Sigs.
