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If I were you I'd base the answer on what you want it to display. For starters, do you want it to display vac? What's the max boost you need it to display? Are you gonna have any other pod-able gauges? Where you gonna mount it/them? Electronic are nice, but aren't as "instant" as mechanical...
I went for the Phantom boost gauge 'cos it blends in well with the dash on MY00. If you want something that looks a little more Fast & Furious then check out the rest of their line up.