Probabaly the only advantage of all the NOVA traffic...............makes spectre's practiacally useless.

AFAIK, spectre's are not everywhere. VSP are supposedly have ~50, and you may see 1 or 2 in some of the localities. Best way to go is get an RD that is spectre immune(Bell STi) or one that is only detectable within a few hundred feet. Spectre can detect some of the lower end RD's like cobra's and whistlers over a 1/4 mile away.