Hi
about the heisig books: i recomend them if you have just begun to learn the kanji. he uses that kind of system like koichi does on textfugu.
but
if you already have learnd a lot of kanji from textfugu, it can be kind of tricky to use heisig too. it than can happen like: the kanji for “white” looks like a shell for koichi or like a ricecorn for heisig. and and after some hundreds of those kanji you can get some problems becoause it can be confusing.
my english is bad, i hope you still understod what i meant ^^