Commercial Cable Suggestions??

[yawwho1]

We have nine musician practice rooms with a computer recording station 100 to 150 feet away. What cable do you suggest we use in between?

Our initial idea is to have a 2 to 3 computers station room with 2 to 3 mobile racks and electric conduit in the walls and ceilings above (for example - 16 channel Mackey mixer into MOTU 828mk2 into PC running Nuendo) but no idea what connecting cables to use.

We have two separate recording studios in the same building so this is for practice sessions and live tracking only. Quality and long-term commercial use are concerns but expense is also. What cable type, available in 500 foot lengths minimum, would you recommend for this application?