Stick with bitcointalk whether its Bitcoin related or Altcoin related talks. Most projects prefer to run their bounty in this forum. But in terms of information almost the same its like a mirror of altcoin section of bitcointalk
There is no mirror between Altcoinstalk and Bitcointalk altcoin section at all.
Altcoinstalk is full of nothing but nonsensical spam. There is also a lot of spam on Bitcointalk, but you can find a huge amount of valuable information here, no chance on Altcoinstalk for that.