I've had metrics and my '06 RKC is my first Harley. I've had it for about a year and a half. I enjoy this bike more than the metrics.
But to answer the question if an HD is worth more than a metric, just go look on craigslist or the cycle trader. What is a 10 year old HD going for compared to a comparable Honda or Yamaha or whatever other make of the same year. The HD's might cost a bit more when you buy it, but I can guarantee that it'll be worth more if you ever go to sell it.