Hey Russell - I started out on a Hard Rock about 13 years ago. I moved up to a RockHopper, but almost immediately upgraded to a Trek 970. My advice is not to skimp on the upgrade! I eventually ended up on a StumpJumper - which is a fine all around bike that I recommend to everyone looking for a decent entry-level XC bike. I rode/raced two of them for many years. The only drawback is that aluminum hardtail frames aren't the best for all day rough riding, as they beat you up a bit.
Happy shopping,