Hehe. See your third child as a long term investment. Someday maybe he/she will find a job at Spitfire Audio and gives you nice discounts<Frantically checks wishlist>
It's the core Studio Series for me I think. The last SF product I brought was Albion ONE and I've used it everywhere. I quite fancy the smaller sections and can think of a few good uses for them already.
Of course, there is an added financial complication with the impending arrival of my third child. Why do this to me, Spitfire?