From the user's perspective they are fairly equivalent. They both free up tons of internal space, and once they are installed, you don't have to give them another thought. There may be speed differences, but I didn't notice them. I have found that the best way to implement them is to copy the script into the init.d folder of the .zip for a rom, and then flash it. You could also use a root explorer type app to copy the script into your current ROMs init.d folder and set the permissions, but I feel like the first method is cleaner.