[sparoz]

Originally Posted by Alext

Which is better? Any differences? Anyone have experience with both?

ESS seems like a very reliable tune that does not overstress the motor but they NEVER have any updates. Whereas Cobb appear to be constantly updating their tunes and have custom maps for free to suit your modifications.

That's what I'm lead to believe anyway from reading.

Already have ESS so was wondering if it is worth changing to COBB?

Yes.