I have my first response from a music library but I'm not sure what to do next

This email is below. I guess I need to get an idea if the deal they are offering is any good and if an exclusive deal is the best way to go? What happens if I sign an exclusive deal for a track that has been submitted for other listings? Is that going to reflect badly on me if the other company want it?
Very pleased to have this but don't want to make a wrong move!!! Thanks in advance for any advice. Very much appreciated.
Here is the email -
We enjoyed listening to your submissions per our Taxi request. XXXXX licenses music in film, TV, and advertising, and composes original background and theme music for TV shows. We would like to consider representing some of your existing music immediately, as well as discuss your interest in creating new music on future projects.
Undoubtedly you have more music available for licensing than was uploaded on Taxi and we would love to take a listen to whatever is available. We offer both exclusive and non-exclusive representation. We can discuss this further, but exclusive representation gives your music the best opportunities in advertising, film, and international markets, and is therefore what we prioritize and are looking for at this time. We split revenue from single track placements with composer/artist and also split the backend, with the composer/artist retaining 100% of writers and assigning us 100% publishers share of performance royalties.
If you are interested, please send a link to your available music and note whether, or not it can be considered for exclusive representation.
Thanks
Mark