I had several pairs of the OG pants-loved them. Very durable, but over the years finally wore them out.
I have had three pair of the original Deltas (V 1.0?) and wear them quite a bit. Comfortable, softer fabric than the original pants, have held up pretty well. My only bitch is that they're
slightly inconsistent length wise. If I were going to order more, I'd probably go longer on the leg and hem them after wash/dry.
Trying a pair their Defiance Jeans now. Same as above, they are just a hair short maybe. Too new to tell re durability. Fits tighter like a pair of jeans (duh) but with some stretch and a crotch gusset they're comfortable, but a little tighter than the Deltas.