This should probably be moved to the speak easy cuz it might get ugly in here.
Linux is very reliable and secure however somewhat difficult to get used to.
FreeBSD is very similar.
MS is not the geatest in either reliablity (judged here in stability), or security this is because MS is very common.
Mac I've never used so idk.
also check out the free solarus thread
http://www.bleepingcomputer.com/forums/ind...c=78226&hl=