I want to give Witness Votes. Whom should I vote? Please suggest

I have 25 witness votes available. I only know that witness are great people who are running the steem blockchain.

I have already voted for Hive account@good-karma, Hive account@blocktrades, Hive account@curie, Hive account@aggroed and Hive account@jerrybanfield. I still have 25 votes available.

I know there are many amazing people who are also doing great work here. Please suggest me some of these amazing people so that I may utilize all my 25 votes available although this would be small contribution.

Please suggest me your favorite witnesses with reasons why should I vote them?