Late post. I settled for 2 draws on the Rainbow Medal promo before maintenance, having been cash-strapped for weeks. I need to be able to use my Rainbow Medal surplus from the last medal bundle I bought. I would have drawn all 8 draws if I wasn't almost broke.
Pouch Flower and a Coral Flower/Hazeran clone (I don't mind this).
So far, the best deals are the ones offering Rainbow Medals IMO. As much as exchange ticket promos are too good to pass up on, the ticket selection has its limits, whereas the Rainbow Medal selection is always up-to-date.