Hi all, I have returned to mountain biking after a 12 year gap the bike I used to ride was a proflex 857 because I enjoyed that bike so much I have managed to get hold of a proflex 4000 K2 cheap. I have been riding that for about 2 months now but keep thinking of new stuff like a Giant full suspension I am 46 years old and wondering whether a more modern bike would be easier to ride as i am struggling a bit with fitness and my friends say a more modern bike would be easier to live with. Any Comments ideas would be most welcome