Best place for selling Lego?

[The Yellow Brick]

It's been several years since I've been on eurobricks so many apologies if this isn't the right place for this Topic, I was a bit perplexed as to where I'd ask this question.

As the title suggests, I'm looking at the possibility of selling a substantial amount of my collection since its remained untouched since sometime back in 2012 and I'm a little lost as to what would be the best way to sell full sets? is there any sites that are created just to sell Lego or would the best route be something like eBay? 

[MAB]

bricklink, brickowl, ebay.

[Peppermint_M]

I also heard that you can sell things well across local sales sites like Gumtree.