BEST REAL-ESTATE APPRECIATIONAventuraWith all the hype over the forest of condo developments sprouting in downtown Miami, the Design District, and Miami Beach, it's important not to lose sight of reality -- especially if you're one of the many hopefuls mortgaging your future in the name of quick profits. According to a Wall Street Journal study, 2004's greatest real-estate appreciation in the entire Southeast was (drum roll, please) zip code 33180 -- Aventura -- where the median home sale price was $445,500. That's a one-year increase of 23.6 percent and a five-year increase of 112.5 percent. Of course you'd never know this from our local media coverage, in which the decidedly unsexy Aventura finds itself overshadowed by the hype for buzz-laden new projects to its south. Let the buyer beware.