If installed properly, while care is taken for the substrate flattness prep, there should be no movement what so ever. Maybe you have heard of the slap it on the floor, guys. That are only there to install it as fast as they can, throwing floor prep out the window.
Yes they feel solid. The just have a resonance to them when hard sole shoes walk on them. The choice of underlayment makes a big differenc, in the amout of resonance.
From an installers stand point, the wider planks, but that is because you can get more sq.ft. in a shorter amount of time compared to a strip style
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