If you read my toning post here, you'll see that I recommended a few different options for acid toners.
Acid toning is one of the best things I ever did for my skin, it was one of the main things that completely cleared it up (along with using good skincare products alongside, and starting to use Liquid Gold.)
If you don't already, I would really recommend starting. Metaphorically speaking, it's a bit like blowing a loud horn into your ear, forcing your skin into action. 
I always apply two toners, so first I use an acid toner to exfoliate, then I use a hydrating spritz toner directly afterwards to hydrate and moisturise, before applying the rest of my routine. 
Honestly, you will fall in love with acid toning when you see the difference it makes to your skin. 

I have a quick update today, firstly is about a toner I mentioned in my toning post mentioned above, the REN Clarimatte Clarifying Toner.