I missed the links.

What types of data are you going to be acquiring?(Thermocouples? Accelerometers? Timing data?) How many channels? Or do you really have no idea? These things can have a great impact on what whether or not an rs-232 interface will even be worth while (it isn't very fast). My suggestion would be to figure out the test parameters, and then figure out the best interface.

Honestly though, if you are just going to be doing slow, single or double channel acquisition, rs-232 is probably your best choice.

Feel free to msg me with questions, ideas, etc, I'm more than willing to help out anyway that I can.

C-.