I try on anything that comes in my waist size (24/25) and hope to goodness it's long enough. I have a small waist, big butt and super skinny and long legs, so anything that's made for big butts is waay to big in the thighs, and I wear a 34 or 35-inch inseam. :/
I have 2 pairs of Guess jeans that are nice, 3 pairs of Silver brand jeans (in the tuesday cut only but they come in 24/35 and the length and waist is perfect), a pair of Parasucos that are short so I tuck them into boots and a pair of random bootlegger straight-leg jeans.
I recommend Guess jeans- they have varied styles and colours, as well as lengths in some stores.