i think it is just a matter of knowing the strengths and weaknesses of each of your synths . IF you know a synth is good for bass , then use is for bass . If a synth is good for weird sounds , use it for that .
I think a good idea is to split up your " producing time " into segments .

FOr example , spend every second day programming synth sounds .....

that way you will really get to know your stuff.

SO to answer your question , no .
I just hear a sound in my head and know which synth will be able to recreate it best. I don't have a set synth for a set part