Interesting, okay so I'll lower my expectations to just a high CTR (with hopes of being super lucky in getting a "mythical" very high.)
Also, I'd be running it off ME on days when I don't play so much (workdays mostly), so this is something I'm chasing over a looong period of time.
But my question still remains.
What is the add value of 1 point in CTR?
I suppose I could level a calibur to lvl 10 (or just wait for my ascended to be lvl 10), one to lvl 5 and compare them to a level 1 to see the rate change in charging between none to medium... But I'm not sure if I could extrapolate that out to maxiumum CTR's levels?
Unless you have lots of CE to blow, no it's not worth it (for Caliburs at least). See this thread: http://forums.spiralknights.com/en/node/8820