How is the rigidity/sturdiness? I am looking at the K2 hotswappable when it is available again, but the price is so low on these keyboards, I am a bit suspicious about quality.

My only mech keyboard so far is my DasKeyboard, but I want to get something tenkeyless for less reach to the mouse, and hot swappable to try different switches

It's pretty sturdy, although the K2 keys seem much more solid. I bought this keyboard because of the low key travel and tactile feel. Although it's low profile I still needed a wrist pad to enjoy it.

About the quality, they seem pretty decent. I haven't had any issues with it.