There is not one document that describes the pros and cons of the different methods.
Spreadsheets--cheap but usually limted in size if you intend to use with excel. No limit with diadem. Database connetivity toolkit--used with your own database. (it is the pros of the database but with the toolkits ease of use) DSC--slow (because it typically handles large volumes of data) but can automatically record thousands of datapoints. Your best bet is to give NI sales a call and have them help with the decision making. Based on your sentence description, I think you would be best off with creating a text file for your data. (Write strings to file). If you are worried about space, you can do a binary file instead.
