hydroplex doesn't work nearly as well with the veg+bloom as +size, I've been running +size and totally dropped everything else except MPK which I feed in place of +Size weeks 6-7. Anything else I used would swing pH too much.
And the +life has tons of other stuff in it besides microbes, pretty sure the stellar response is due to amino acids and enzymes, making +life more similar to vitamino by botanicare, with some added microbes. I don't run the +life unless my plants stress, honestly I've only used it twice outside of experimenting with it.