I know there is 2 ways for saving/loading numbers, strings, ext. But what is better for loading just simple numbers? I believe the 2 are data storage and something else. (Can't remember the name off of the top of my head)
All I am looking for is to simply load/save some stats that are on the player when they join/leave.

2 comments
Data Store, and Data Persistence. Data Store is more efficient because it can store unlimited amounts of data, while Data Persistence can only store a limited amount. Check out these links-Data Persistence: http://wiki.roblox.com/index.php?title=Data_Persistence , Data Store: http://wiki.roblox.com/index.php?title=Data_store . Hope this helped you out :P
Flip those two, Datastore can store 2^16 bytes, Data Persistence can save unlimited.