I need some opinions on boots. I'm not necessarily looking for opinions on brands necessarily, because I know that everyone's feet are different. However, I'm wondering if I really need heavyweight backpacking boots. I used to consistently carry around 40 lbs., but I'm now trying to get that weight down to 25-30 lbs. I've always worn a fairly hefty...full leather boot...similar to the LL Bean Cresta Hikers. I really would love to downgrade to a lighter boot...something that may be rated light-midweight, but I'm not sure if this is wise. Also, I'm a fairly big guy...over 200 lbs. Opinions?