Hmmm, I was hoping to hear that it was significantly more sensitive, considering the MSRP's of the rods are $160, 190, and 230.
I should clarify a bit. With lighter weights I do find the Argon more sensitive. With lighter weights I am more depended upon line watching and the sensitivity of the line. With fluorocarbon line and lighter weights I do find the Argon superior. With heavier weights it is comparable. Taken this into consideration I must say that the Argon is more sensitive. It is not always you would fish in wind and current, I like to use the lightest weight possible for any condition.
One other thing if you like to throw a weightless Senko the Argon is also superior as it loads up well. If you can get one for half price I would jump on it.