I bought the BCZ2610 which is just a bit larger than the 2401. I love it. I've run Stihl FS90R and I like the redmax better. The twisted line is nice too. I was also very skeptical of the line but it does go through the grass better.
I orrigionally ran the twisted line I like it but I got a killer deal I could not pass on with reg line so I am running that for now which is also nice as it is good quality line