I know American Apparel had a lot of issues but I did still use them for some basics (explained here back in 2011). It took them 6 years to officially sink. And now I find myself down to just one option for leggings (and bike shorts, to wear to my acupuncture and chiro appointments) so I'm sharing it with you guys since a lot of us are probably in the same boat, though you guys probably wear bike shorts for less geriatric reasons.
I don't need to replace bike shorts or leggings that often, but when I do, I use Maggie's Organics. I find most of their apparel not something I'd wear. Too many ruched things and skirted leggings for me. But! Their basic ankle-length leggings and bike shorts are good. (You guys are on your own with the printed leggings and calf-length leggings, though.) Also their cotton socks are great.
I have all the reasons I'm happy to shop at Maggie's Organics on my "Where I Buy" page here.
If you shopped at American Apparel for your basics (or non-basics), what did you guys buy there and where are you planning on getting those things instead?