I know many would disagree and even your self since it's your budget.
I'd say don't go crazy spending $$ on a Rockhopper. I own one and their great started bikes but I'm in the process of upgrading significantly (Epic) because I did the math and it did not make seance. A good fork such as Fox makes ALL the difference and good hydrolic brakes help a lot, but buying and installing those two upgrades would easily be $500-$600 and you still have all the other basic components. You may be better off buying a higher end Specialized (Stumpjumper) and then selling your existing Rockhopper. IMO.
I'd say don't go crazy spending $$ on a Rockhopper. I own one and their great started bikes but I'm in the process of upgrading significantly (Epic) because I did the math and it did not make seance. A good fork such as Fox makes ALL the difference and good hydrolic brakes help a lot, but buying and installing those two upgrades would easily be $500-$600 and you still have all the other basic components. You may be better off buying a higher end Specialized (Stumpjumper) and then selling your existing Rockhopper. IMO.