I have around 100 domains, out of 100 only 50 are active. Only 3 sites are using adsense, around 20 are based on affiliate offers.
Even smallest site inside my network got more then 10 article pages, biggest one got 16,000 indexed pages.
Forgot one of my site got around 1 mil indexed pages, lol i haven't started proper work on it dunno if yahoo is just fooling me but from last 1 month I am seeing it.
I am doing good with moneywise... Quality over Quantity... Starting few more sites by next month. No autoblogs, all unique content and ranking for their keywords on first page of different search engines...
I will say build few sites and work on them... In the end you will make more....