I'd recommend 5ep straight down zip. I sized down to a 29, (normal dry jean size 30, natural waist 31.5) and the thighs are still like an inch or two baggier than my size 32 lvc47s for some reason (remember lvcs shrink 2 sizes and 47s are very narrow). Meanwhile the knee and below is drastically narrower than those same 47s. Incidentally the waist has also stretched out like a mofo. The cut is kinda weird when sized down like this but i think it looks rather stylish.
Whereabouts are you measuring your "natural waist" ? Thinking about the 5ep myself. I'm sure everyone has different ideas on where to measure themselves