Well ntfs does reserve some of the space on the hard drive where fat32 does not(It's like a book where paper takes up space in that book and fat32 is is like a table with legs on it,it has to allocate those legs for it to stand up correctly),true fat32 can have file allocation errors (alot less than fat because it is still based on it,it is just an extension of fat)where ntfs does not have file allocation errors(Because it is not based on the file allocation table but a journal),fat32 is actualy best on small drives and ntfs on bigger drives,using a compressed drive does indeed give more space but when you access a file it has to decompress it and recompress it(thats alot of work to do)and you loose performance,with a non compressed drive you don't have those extras processor hungry and time cunsuming tasks to perform.so ntfs is faster and more reliable on large drives than fat32 but fat32 can be faster on smaller drives and it's not as reliable as ntfs indeed i would use ntfs on small drives(defenatly not on a 1 or 3 GB drive),you loose a bit of speed but you keep the reliablity and that could mean less crashing n such.