I have worn Levi 501 jeans for years but were always annoyed by the waist height aspect of the fit, and weakness in certain seams. Ditto on most brands of khakis, the office rat's jeans.  After purchasing a couple pairs of Carhartt's excellent khakis, I decided to try their jeans.  I have never before had a better fit in a pair of jeans,or a more correct sizing of the waist and inseam.  They are so comfortable my wife has to steal them away to wash them, so I got more of them. I have several Carhartt products and I can assure you they are made for maximum durabilty, value and comfort for the working man.  The relaxed fit version is especially comfortable on horseback because it allows your legs to move without pulling down the waist.  Best ever jeans!!

And the best source I found for price and prompt delivery was Amazon.  If they say they have it, you get it quick and well packed.