I agree with Ironhead on the local shop front. I picked up a new mountain bike last year and i don't know ANYTHING about bike/part manufacturers. The local shops seem to be more interested in getting you the right bike instead of the best profit. The guy I worked with recommended about 4 bikes based on my riding requirements, and let me putt around outside the store on them, even made small adjustments (seat/handlebar height). I walked out of there with a great fitting bike and a stellar price (i was lucky enough to catch the end of year sale).
Just take your time and make sure you like what you're buying!
Your HDR looks bad, and you should feel bad
For someone your size I'd aim more toward an all-mountain bike. A nice one will be light enough, and with good enough geometry to climb very well, while being built strong enough to survive full downhilling. I could throw around some recommendations, but there is a huge price range possible! Local bike shop is the best way to go
if I had one suggestion its this. Look at what you're going to spend on a new bike, then take that same amount of money and jump on Craigslist or Pinkbike. You can get a lot of bike for 5-600 dollars. In the ways of new bikes, 5-600 will get you started and by the time you have a bike you want, all you have left from the initial purchase is the frame. Been there done that.