Torn between two IC's... Please help...

I'm torn between Goertz Silver Sapphire and Morrow MA-4's... Currently I have Goertz copper mircopurls going from my Bifrost dac to my NAD 326bee... My plan is to move the copper microlpurls in the place of the pre-amp jumpers and buy a new set of ic's to go from the Bifrost to the NAD... I only need a 1/2 meter for the run... I wish I knew how the MA-4's compared to the Silver Sapphire Goertz... Any help would be greatly appreciated...

Thanks,
Leo