I have been using PAL reading and writing with my Kindergartener and he loves it! I feel it's very thorough. We have a great time playing the games and he is mastering the basic concepts. Very pleased!

Have you thought about the Primary Arts of Language by Andrew Pudewa. I am using that with my Kindergartener and he loves it. In fact, my 3 year old tags along and is retaining much from it too. This has 2 books and we are using both of them.