-Cut: 501 straight, of course
-Size: I'm a 30x30 on Levi's STF, which fits perfectly after a few wears to bring the waist down.
-Color: something that isn't really saturated too blue (i definitely do not like the 501s STF indigo, it looks too blue for me.). I've seen some people with APCs that are moderately blue, more towards gray, as shown below.
-Fly: button fly!
-Fade: I dont mind taking a while for it to fade.
-Weight: i've never really had anything heavier than Levi's weights (12.5oz, right. but, i can go heavier. However, i do live in Southern California, and the weather can sometimes get pretty hot.
I took a look at Unbrandeds, and people seem to rave about them. APCs were also another consideration. But, I heard their quality has been poor, lately. I'm not too familiar with the japanese brands.