I'm thinking of replacing my 10 year old Kastle ATB which had no rear suspension and very crude front. I'm told by bike shops not to bother with rear suspension unless its for off road. The other thing is disk brakes which I've heard are more trouble. I've seen Marin in my local shop and Saracen in Halfords. Any recommendations welcome. I'm not a racer type but love to do off road plus a bit of commuting.