@dj3ei @Ea5iyl The problem with slower than 25 WPM character speed (not true speed) is that you are able to count dits/dahs. Which is bad habit too as this must be unlearned.
I don't know if it is stated fact that Farnsworth causes "thinking". I have practiced with Farnsworth-method and for me for most of the characters a certain sound pattern is clearly that character. I don't need to "think" at it all. So dunno where that claim is coming from?