I used to ride moutain bikes a lot when I was younger but got to busy (and then to fat and unfit ) to be bothered of late. Now that I am in the late 30's I am thinking I need to get fit again and also I have a huge amount of fantastic coastal single track at my door step that I am not allowed (and is patrolled by rangers) to ride on a dirt bike (well maybe sometimes I sneak in...) that I would like to ride through. The terrain is a combo of rocky hills, loose sand, hard pack clay sand and limestone. So thinking about bike choice (when I get some money coming in) and this is where my questions for mountain bikers of the current millenium lies... what is the closest thing you can get with pedal power to an enduro bike? (I would love a electric moto like a Zero, but this is about getting fit...) I know that the big tyred/suspended downhill bikes look the part, but arent they only one gear? Is there anything with the heavy duty suspension, big tyres, lightweight and good gearing for x-country riding??