As a single traveller I prefer to use a shuttle (unless I hire a car) as the cost of a private transfer for 1 tends to be a bit ott.
I had a shuttle booking with
www.transfer4cheap.com which was confirmed by email with a print off voucher then I got an email to say sorry, we have no room on the bus, this on the day I travel!
Have just booked with
www.transferonly.com for £18 return, will update this after I've done the return journey to let you know how it went. Having spoken to the lady on the phone (via Skype to a UK number at no cost to me) this always puts my mind at rest instead of an email booking, even in this modern age of electronic communication!
Goodbye Brighton, hello Calis, mine's an Efes!