My son knew all his sounds and we decided to start a reading scheme. Since we had used Jolly phonics workbooks, I chose their first level (red). Although he could read them (at least the first three of each of the subjects), we found many cons: (1) The size of the words was too small. (2) Most of the stories were dry. (3) The complexity in the sounds used per book didn't build up gradually. (4) The books didn't seem to focus in a few particular sounds at a time.
Given all this, I decided to try the Songbirds series from the Oxford Reading Tree by Julia Donaldson, and they are much better. All my concerns above are fully addressed in these series. He feels a lot more confident when reading and doesn't find it -and I quote-, `boring'. He even wants to read them again and again, which is great for practice. The illustrations are very lively and we can talk a lot about them as well.
Also the teaching notes included in the Songbird series give a few good ideas to keep practising the sounds.
A great resource, and really worth every penny.