Can You Explain The Differences Among These Blast Databases?

I am trying to blast my sequence against primate databases remotely. But there are so many databases, and most are in abbreviation. Can you explain what they are in the below example list?

chimp AACZ contigs
chimp AADA contigs
chimp bes
chimp est
chimp htgs
chimp all contig
chimp refseq contig

and which one should I use for NGS reads?