What will give a better guitar sound?? Dual Track or Quad tracked?

[doclegion]

Whats the best technicue for tracking guitars?? I always use dual tracking (hard L hard R) and the occasional one up the center but quad seems to work well and make it fuller but everything seems to come down a bit in the mix if i quad them up!! Whats your opinion Whats a good way to go about this to achieve a mix of guitars??