$6/sf should include the price of product as well as the cost of labor. That means (roughly) half the price is the product and the other half is the install. That's about right for a click together floor. A glue down floor can be a little bit more (labor price goes up) because of the extra time it takes and the adhesive required.

The professional flooring installers who have a reputation to maintain, prefer glue down....because it has few "call backs". That means there are fewer complaints by the homeowner. Fewer complaints means better homeowner satisfaction.

A glue down vinyl plank SHOULD have "real" plywood - not OSB; not fibre board - as the substrate it is glued to. That can increase the material costs for the build (it depends on what the builder had in mind when s/he specified underlayment for the home (many spec. OSB or fiber board because it saves them THOUSANDS of dollars).

So the "professional" consensus is: glue down vinyl is the better product. It will cost you more in labor costs and probably material costs for subfloors but it has fewer complaints (when installed properly).

There are some "better" professionals who won't TOUCH floating vinyl....they won't risk their reputations on a "bad" click system (hard to tell if the system is bad or not...until it fails a few months later).

Cancork - that's part of the reason that makes me a little hesitant, this is a rather new floor and no one really knows how it will hold up. I'm hoping by April or May that there will be some additional reviews out to better make my choice, for now, it's the only floor that I've found that I like, let alone love. I appreciate your feedback, I was leaning towards glue down but was hesitant. Thank you so much for your info, as someone who really knows nothing about flooring and after stopping by four places and no one would tell you why they preferred one way over another, this certainly helps.