I don't do selective editing often enough to become really comfortable with the medium size tablet that I purchased a couple of years ago.
Dealing with absolute pointer position (vs the mouse's relative), different drawing friction, different clicking system ... all that is still disturbing enough for me to obviate much of the tablet's higher working accuracy compared to the regular mouse. In fact, it has been several months since I last bothered setting the tablet up. For simple local edits I just go ahead with the mouse.
Today I received this Pen Mouse and it looks like the right compromise for my infrequent selective edits.
No space clearing and setting up required, I just grab the Pen Mouse instead of the regular one and drive it over the regular mouse's pad. The feel is quite similar to the common mouse, except for the the pen-holding grip which improves drawing precision. There is even a speed reduction button, although nothing equivalent to tablet pressure response.
Of course the Pen Mouse isn't here to compete with a tablet in experienced hands. 
http://www.focalprice.com …ampaign=DM_1322WG_CK0160B![]()
Also available from Amazon:
http://www.amazon.com …sr=8-2&keywords=mouse+pen![]()

