Will you be saving the CDL stock for "dress up" occasions, or will you be using the synthetic stock full-time? If it's the latter, save your $$, & get the SPS. Same action (and barrel contour, I
believe...), less $$$.
I have no experience with any of the stocks you've mentioned, though I've heard good things about all of them. I'd recommend personally handling as many of them as you can, however, prior to deciding.
When you figure out the cost of the synthetics, you may want to check them against the 700 XCR: if it's a wash, you may want to save yourself the trouble.
http://www.remington.com/products/firearms/centerfire_rifles/model_700/model_700_XCR.asp
FC