Where are pants patterns that fit slim in the legs like RTW?

Here's the iphone app I want: you point it at a RTW pair of pants and it prints out the pattern. Am I the only one with this problem? I cannot find pants patterns that fit without tons of alteration, when I seem to be extremely EASY to fit in RTW. I can even go to a THRIFT STORE and find half a dozen pairs of pants that fit well: slim in the hips and legs, not ridiculously tight on the waist. But patterns?... no way. It's like they're made for a non-existent body type.... tight at the waist and baggy in the legs. Anyone else frustrated with this?

For example: Paired below with my two favorite tops from 2010 is a pair of RTW pants that fit the way I like, same as many others I have in my closet (many from thrift stores):

1. Simplicity 4076: twist tie top review


2. Simplicity 4095: black crossover top review


I wish I could say I sewed these pants. But I didn't. I say "why bother?" It's so darn much work to make them fit. If anyone has advice ... or maybe my mistake is sticking to the big 4? Or is it time to grow up and make a sloper once and for all?

How do you all cope?

p.s. I'd HIGHLY recommend both of those top patterns. Definitely my fav's of the year.