Cogent vs Blended Option? PROS & CONS?

Hi,

I currently have a few server at a datacenter and they are giving me less bandwidth, only 50TB and I am planning to get a new line.

I am going to keep using the existing 50TB and get a new line. But i I torn which way to go for.

I have a Cogent option, which is costing me $430/mo with one time setup fees of $275.

1gbps at 10gb fibre.

And I have another option of $400/mo with $500 setup fees.

Again 1gbps @ 10gb fibre.

But it is blend of Zayo, GTT, Cogent and IX peering.

Which one should I opt for? Any tips?