I thought this would be a fun (and hopefully, informative) sharing session between some of us artists here on DA. These are the 10 (?) most useful things (or vendors) that I've come to rely on while working on my art in Daz Studio. Full disclosure, I render pretty much exclusively in Iray, so a lot of these products are tuned for that direction.
1) TerraDome 3 (http://www.daz3d.com/terradome-3-iray). This has become my go-to for any render that has an outside - whether it's an outside shoot like Raya and the car, or an indoor shoot with a window. It has both a fantastic set of iray skies as well as a large but not overly complicated "land" to be used to help take your renders to the horizon. The morphs (and packages) for the land to give you extra shapes (or roads) are also very useful!
2) OutOfTouch (Vendor) - At both Daz and Renderosity, they have provided some of the best hair and shoe models I've seen. Honestly, most of pieces have at least one thing from them in there somewhere. A