kenwood kdc hd942u.
best radio for the dollar...can be had for just over 150....althou i unfortunetly paid a good bit more.
plays cd/mp3 cd
has usb connector that runs out the back and can be run to the center console or glove box...i use it to run my ipod touch,(however it can read music files off a thumbdrive too) it both charges and plays the touch...u can control the ipod traditionally or use the radio controls to easily search the ipod...it has a five line display to make searching quicker. i also have a 3.5 jack run to the glove box...so i can plug in my laptop when the passengers wanna watcha movie.
it has an hd radio...so you pick up additional stations,
has a remote...althou thats not very needed in the beetle.
it also has a built in 3 bang equalizer...so you can adjust bass mid and highs...as well as there q points
it has built in hpf (high pass filter) and lpf(low pass filter) so you can further tune your system...this will help reduce risk of blowing stock speakers by eliminating the extrememly low bass freq that theyll struggle to play.
has 3 sets of 4 volt preouts if you ever decide to add a mono amp for a sub and 4 channel amp for the highs.
it also has time correction. which i find to be amazingly useful. it allow you to adjust when each speaker plays the notes....therefore aligning the sound much better...since our rear speakers are much closer to our ears than the front speakers its very useful...youd be surprised (and its the only radio that i know of that offers this feature without spending extra money on modules like alpine) and its very easy to use.
it illuminates blue...i actually put pictures of it on another post...one that the title actually asks for aftermarket radio pictures...its quite symetrical and looks good in the car.
it also has a sound restorer which you can turn on or off...i dont remember the feature name...but it basically takes mp3s that have been compressed or recorded at lower bit rates and digitally restores them...really helps if you dont have all your recordings at 192kb.
only issue i can speak of is how it can be difficult to use the two control knows....after an hour of playing around youll understand the menu and navigation...but the knobs are a bit of a pain...but you get used to it...and i wouldnt trade it for anything ive seen for under 400 bucks.
heres a link...check it out...
this site will give you lots of info...pics...reviews..
Kenwood KDC-HD942U (kdchd942u) All In-Dash Car Stereo Receivers Car Stereo Receivers and Head Units Car Audio Car Audio, Video, & GPS Navigation - Sonic Electronix
good luck!!!