I used to have a white summer pair a long time ago, but I gave them to charity as I realised they weren't the most flattering - made my thighs look chunky. Have you tried the 504 straight fit tapered leg?
Their styles are very restricted in my size. I wear a 36x36. Other places say they have other styles but then when you order them, and this has happened to me a few times, you get an e-mail saying they're out of stock but they can get me a pair of 501's!
Are 504's low rise ? I can't wear low rise jeans, I'm not a teenager.

The way they sit is completely different, and they are much kinder to any bumps! The 501 are somewhat dated and are going to age you.
My age ages me!

If it wasn't for my stomach, I'd be okay. I actually consider my legs to be my best feature! (All that walking helps!)
And American Apparel rocks! Have you tried your underwear from them?
No, I like my boring M&S boxers. It's not like anyone's ever going to see them on me anyway.