Well, I went ahead and ordered the combination; one fastway onestep XL, one x-tended x-chock. With all the back-and-forth arguments of not putting on x-chocks prior to unhitching/leveling, need for x-chocks + regular chocks due to tire contraction, etc.., I figure best of both worlds is the way to go. Plus, if I want to add another x-chock later, don't think the fastway will go to waste for quick use situations.
By the way, rvwholesalers.com seems to have a pretty good price on these; however, i did add some Lynx Levelers to get to the $125 free shipping price (e.g. better than paying the extra in shipping and getting nothing out of it).
2013 White Hawk 26SRK
Sold: 2007 17' Casita Spirit Deluxe
Sold: 1992 Coleman Pop-up
Sold: Many Tents, All Sizes.....