Apart from all that has been said before, I like that Aiko 4 and Steph4 are now morphs for Vicky - makes it easier to create interesting charas with mixed morphs and dress them.

Also, out of all the shops I know, DAZ' website looks the most professional and is the easiest to navigate. Makes you feel safe to buy there, which isn't entirely unimportant. (And the awesome looking shop art in promo pics surely helps sales, too.)