Alf
You might want to take a look at the Muse Receptor. It is great for gigging, as it is built like a tank, and fits in a rack. The OS has been recently upgraded.

The advantages are many, as it is dedicated to VST's. The only disadvantage is that, wheras Muse is adding programs daily, it is not as versatile as a PC.
http://www.museresearch.com/receptor.php?r=overview

Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact