I've used a Mity 8 for many years, and it's great. It's simple, straight forward, and without a lot of extra junk. As someone else mentioned, I also broke the mounting unit's clip on a sub-freezing day. Now I wait until the bike is in the house and warmed up a bit before removing the computer. However I like it overall.
__________________
The rider in my avatar is David Etxebarria, not me.