The most annoying bit of Battery I've found is the way you set a cell to a send to a different output.

You have to ctrl click on the output box, and type in the new output number! Not just counter-intuitive, but against the user interface design of the rest of the program. Nice.

As for Reactor, Len Sasso has written a book on using this piece of software. Just got hold of it last night, so I'll let y'all know how good it is!

T*