I don't have any low-profile keyboards.
The only one I've heard good reviews for is the Nuphy Air75.
Wouldn't mind having one of those. Some of the low-profile tactiles are interesting. From the various Gateron-style 'browns' to some off-brand 'browns' that are non-MX feeling, to the Kailh Sunset which actually have some personality.
It seems to be no cheaper than setting up an MX keyboard, though.