Just thought I'd post this.
I'm starting a new tank that is roughly 1/2 sand and 1/2 eco complete, separated by a dam of rocks.
The pool sand I picked up is awesome. It has a beautiful mixture of dark and light grains, is "soft" to the touch, and... no rinsing. The bag is fairly generic looking. It just says "pool sand" and cost me $9 per bag.
I tried rinsing some and the water stayed almost perfectly clear, so I decided just to dump the bag in, except the bottom-most stuff which is likely dust (or at least that's the case in almost any other bagged product)
Anyway, getting away from rinsing is a HUGE plus. I figured I'd be swishing that stuff around all night.
I'll post pics once the water clears from the eco-complete (that stuff is "no rinse" due to being packed in water, and clouds things up for a bit unless you use the little packet it comes with)
Pete