Submit ESP or SVG

EPS is better if you want to open the file back up in Illustrator with zero errors / exact same path shapes, point count

SVG will not open up nicely in Illustrator without errors (search SVG Roundtrip. it's not meant for that.) 

SVG is more commonly used in web-based output

EPS is more commonly used if there is a print dependency

It always depends on the context. What for?

e.g. for web design EPS is basically useless. SVG on the other hand is a rather bad choice for most printing jobs.

Apart from that EPS is also a dinosaur and you might want to consider PDF for a lot of things.