Will it be so well rounded like the ones which are comparable in price with the MX (e.g. Das, Leopold, etc.), so I can buy one and use without any tweaking?

Or will they be supported by a warranty so well that they'll just send me a replacement without shipping anything back?

Remember, I've said I have no time. I want to plug and forget the device.

Yes. Literally tons of them. The only difference is that you might not be able to pick it up at Best Buy.

I’d not cross an ocean to get a keyboard from Best Buy.

Also, some of the most touted brands can’t be shipped to my country either.