anyone compared the elrod 3 PC and the NBS monitor

Better to compare the Elrod to the NBS Omega or the Omega 1. IMHO the Omega is far superior to the Monitor 0, while the Monitor 0 is no slouch either. Of course, the Monitor 0 can be found in the used market at fairly low prices.
I have not had a chance to directly compare the EPS and the Omega PCs.