I had done biking on a road bike for a while and having a X Country running backround made it easier to transition to MTB with my friend. I was using his old hard tail for about 2 months and he would start leaving me behind on the down hills mostly. He has been biking for a long time and done some races too. I was finding that while his bike was sufficent for now I wasn't comfortable with it. I purchased a new bike not at $5000 but at $2000 and it made such a difference. I've beaten my friend regularly even with his hardtail but now in comfort. My only worry in getting such an expensive bike is riding it and using it. Because of school I don't have as much time. I think it was definitely a good investment because I'll have it for a long time and will be in good health if anything.
Nick
Nick