It all depends on what kind of libraries you're running, how much memory you have and how you divide up your orchestra.
I run VSL orchestral cube on a separate computer, so in a typical template I use the following tracks in my symphony #8:
1. piccolo
2. flutes (for solo flutes or 2-3 flutes playing different parts)
3. 3 flutes (samples are three flutes in unison)
4. oboes
5. 3 oboes (ditto flutes)
6. Eng horn
7. clarinets
8. 3 clarinets (ditto flutes)
9. bass clarinet
10. bassoons
11. 3 bassoons (ditto flutes)
12. 2 horns
13. 2 horns
14. 4 horns (for unison)
15. trpt 1
16. trpt 2
17. trpt 3
18. 3 trpts, unison
19. tromb1
20. tromb2
21. tromb3
22. 3 trombones (unison)
23. tuba
24. timpani
25. cymbals/gong
26. snare
27. tambourine
28. harp
29. vln 1
30. vln 2
31. vlas
32. cellos
33. double basses
You can hear what I consider my best symphony to date here:
www.jerrygerber.com/symph8.htm Also, for those of you in the San Francisco Bay Area, you might want to take a look at the new workshop I am presenting at the San Francisco New Music Center in May:
www.jerrygerber.com/beyondthemidimockup.htm Best,
Jerry