Car service from Malaga to outside Granada--suggestions?

We are arriving in Malaga (AGP) and trying to catch up with the rest of our group in the outskirts of Granada. The timing does not allow us to take the bus or train lines. Any suggestions for which car service to hire? We also need to make a stop along the way (if that matters). I have found a few companies online, but rather than throw a dart, it would be helpful if others had some good referrals to pass along.