AES is a pretty strong enryption algorithm, even in 128 bit form. The 256 bit version is the most secure version. There are so many modes so just AES is not enough. Some AES modes that come to mind are cypher block chaining, propagating cipher block chaining, output feedback, counter mode, electronic codebook.
Yeah was playing with a site called infoencrypt.com and it is a pretty good converter.....
my test password is pantex422698 .... if ya have time cut an paste the post above and see if it works.