Dear Everybody
I think that the best tool for U that the tool U can use very smooth and U like to use it, for me, i have seen use Orcad, Expedition, Concept HDL. Concept HDL is a power full for schematic, but it is very complex to study ( Simulation by concept HDL is very good ). Orcad in PSD ( Orcad 9.2.3 ) is a good tool, The Cadence support for it, so U can tranlate netlist to Allegro layout, I have use orcad to drawing schematic about 80 pages and translater netlist to allegro to layout mother board. everything works smoothly. Orcad easy to learn, and U can use the PCB navigator to translate to another layout tools. and i think that if U no need simulation, U can choose Orcad 9.2.3, it is enough. This is a my opinion.
Thanks
Concat