Try White Rhino or AK-48. Both are bomb, both available inexpensively from seedboutique.com, neither gets very large (White Rhino is the shorter of the two), both good with ScroG. White Rhino is more Indica-dominant than AK-48, and thus produces more of a body stoning couchlock than AK-48. They both just plain kick ass though, especially for the price.