I have been looking for a mouse to support nice copy-and-paste-of-text
on Linux for over 7 years now.
I recently found the best candidate so far --- a Logitech 't400' mouse.
I am not the only one who has been lamenting the lack of such a mouse.
There are many engineers, graphics artists, 3D modeling artists, and
video effects people who have been searching for such a mouse.
About 10 comments from such people are collected at the following web page
along with some information on the mouse.
Here is a typical comment under the forum-posting title:
'Good. Could be great for Pros.' March 1, 2013
"This is the first real 3 button mouse [the Logitech t400] that I've found
in a long time. As a VFX [video effects] professional, I use middle click
just as much as most people use left and right click. There are so many
people that use middle click everyday and are stuck using ancient mice
from the 90's or contorting their fingers to use the scroll wheel.
I bought the T400 because it looked like the old style 3 button mice,
and I was so pleased to find that it truly works like a traditional 3
button mouse. BRAVO!" --- from www.logitech.com/en-us/product/