get the RCD510
get an IPOD
then upload all your CDs to itunes, will take you about a minute a CD but once done you'll have your full album colleciton in your car, with a touch screen interface - AND you will have access to podcasts etc from all over the world so if you are bored of music for a while you can listen to a Radio 4 science program, football roundup from Liverpool fans club, gardening program, whatever you want (have a look on the itunes store to get an idea of what I am on about)
don't bother with the satnav, for £100 you can get a tomtom which is easier to use, more up to date, and plots much better routes (i've tried both)
if you can afford it get the dynaudio upgrade too, its awesome ! (Makes your music sound better than you'd ever expect)