Just as a point to put out there. The current trend in restorations today, meet both sides of this poll - and that is how I like them. Places like Midwest Aero Restorations, or Westpac, or Fighter Rebuilders, or Avspecs, or Pioneer Aero, can, and have, restored many warbirds over the past decade, exactly as they were right off the production line, and into combat in WWII, with proper paint and finish per each individual part throughout, proper instrumentation, completely functional military equipment, original radio equipment, accurate markings, etc., etc., etc. Of course modern radios are still required but they are installed in a way which doesn't interfere with taking away any original equipment, and are placed in areas that don't distract from the overall look. This is how I like them the most - the best of both worlds - and you don't look out of part, flying in a modern-day sim. The only FSX product to do a model this way, for FSX, is Realair, but they certainly won't be the last, and I say that with certainty.

(Wozza's recent T-6G fits in that regard as well - with mostly original interior setup, with the addition of a couple of modern radios)
Mathias, I enjoy that part of being a developer, studying original drawings, manuals, tech orders, photos, and working with the guys and gals that rebuild and fly the same aircraft today, and if at all possible, the guys and gals that did the same during the 40's. Unfortunately, you end up, for likely the rest of your life, with tons and tons of useless trivia about a particular aircraft, as you become a walking encyclopedia on the aircraft. :d