In general, I prefer to play the newest version of a game because it tends to benefit from advances in game design and technology. In the case of the REmake, Capcom took a game that by current standards was utterly broken and made the definitive version of the game. Similarly, Konami took a pretty horrible game in the original Silent Hill and "reimagined" (man, I hate that term) it into something that's actually playable (if nothing like any other Silent Hill game). And, of course, you have Nintendo's Zero Mission remake of the original Metroid, taking a terrible game and rebuilding it from the ground-up into one of the best games in the franchise. I could go on, but you get the idea. Occasionally, you get a remake that just doesn't understand what the original game was (though I'm struggling to think of examples right now), but for the most part I find the newer versions to just be more pleasant experiences.