I like them both.
Reminds me of one of my own: startupkeys dot com.
They (especially -keys) would be good for blogging and education / training.
You could start selling an ebook, or other products and services for domainers.
It could even be a conference.
That is promising... this is the first time that someone tell me my domain is good..
I started domaining about 1 month ago. I Start reading, watching, asking, even losing some money.