Ha, I'm waiting for one of those companies to send me free jeans, then I'll let you know.
Not familiar with the cougars, but the APCs and RRDS are different enough that you should be able to choose. Rescues are straight, and looser in the thigh, probably about the same at the hem. Also very understated, you will probably never be recognized as wearing a pair of rescues. RRDS are closer in the thigh, slightly lower rise, super-low back pockets, and bootcut. Also loudly branded. The RRDS will fade faster, to a truer blue. The APC will fade more slowly, and the indigo is darker, with a near-purple tone.
Of course, buyign the whalls supports a denim artisan, and you get one-on-one customer support with the designer.
Make up your mind yet?