Precision Fidelity C/7A Revised v. Spectral DMC-20

Hi, we have an opportunity to invest in a Spectral DMC-20 and was wondering if anyone could given some input on whether transitioning from the Precision Fidelity to the Spectral would be worth it in terms of cost-performance ratio. It was a very difficult time finding the PF C/7A Revised and it is a great preamp, however "upgraditis" is itching at my back on whether it would be worth getting the Spectral.