I am seriously impressed with this unit for the price. FM/DAB/CD-MP3/SD-Card/AUX all work & pretty much covers things (I don't need bluetooth, I jack-jack my phone into the AUX to play mp3's).
I was worried about the DAB reception but it's been fine - I've actually glued a flexible fridge magnet to my dashboard and normally have the mag mounted aerial (included in the kit!) inside the car. It usually gets a signal lying on the floor (I've had my car broken into too many times to leave it on show). It's easy enough to pop it on the roof in v. poor signal areas.
CD navigation is pretty good (always an issue with 200+ songs on a CD) but the fast fwd / back is quite slow & has to be held down - a pain if your want to scroll to the end of a 45min track!!! Fortunately the unit does remember where it turned off & starts from the same a place for MP3 CD's as well as normal CD's (& the SD card).
Travel announcements seem to work, but I've only had local ones so far.
If you have a google you should find the manual online so that should tell you how it works.
Downsides: The MP3 searching & info display could be better, the display is a bit bright, lots of buttons (but lots of functions!) sound quality I can't vouch for as I have cheap speakers but seems OK...
Upsides: Lots of (working) options, good FM & DAB reception, MP3 searching is OK, it saves the play position of recorded music, It's cheaper than most and comes with an aerial and a ISO adaptor which are quite pricey anyway. I needed an aerial adaptor (for my skoda) - 99p from ebay (radioworld) so all in all a real bargain.
NB I bought the 485 from Market Place seller: Car Audio Warehouse for £82.49.