i have never sen or even heard of the Funcpad until reading ur post
But i OWN a ratpad, and i am an avid CS'er
I have had mine for over a year and will NEVER look back.
I have so far converted two friends and my brother into getting one- they were not sorry they did it.
However the func HAS got added bonuses such as the cord clip and wrist pad- but i would not swap mine for it