Best social listening and influencer platforms?

[Fiona Beyond Bamboo]

Hi - I have an interview on Thurs for a strategist role in a comms agency. I've work in comms agency for ages and this role will require more focus on social listening and influencer platforms. 

What are your faves and why?

Ones I've used and will mention if asked will be:

Hootsuite

Google Mention

Tweetchup

Speakr.com

Traackr.com

Neoreach

Meltwater

Nuzzle

Buzz Stream 

I'm also investigating: 

Word perks

Totems 

Any other good or new ones for B2B and B2C content I should review before my meeting??

Thanks Guys

Fiona