PJB-100 Or Nomad Jukebox ?

hiya all, choices choices and choices *sigh* i need help to make up my mind, i want a jukebox(obviously) and the primary purpose is to use it instead of a cd changer in my car, the two which i can easily get here ( karachi pakistan ) are Creative Nomad Jukebox and Personal Jukebox both are 6GB and quiet similiar which is making me puzzled and i can't seem to make up my mind, my computer shop person recomends PJB-100 to me

is it okay to use nomad/pjb instead of cd changers ? i mean sound quality etc

is there any quality loss when casette adapter is used? if so how much?

11 cd changer of kenwood would cost me about 200$'s here so if quality is good enough than why spend money on changer

i understand that PJB have 10 mins buffer / skip protection and creative have 8 mins , but these are all advertised "facts" which one of the above would be stable in car? lets say road conditions are REALLY BAD! compare it to as a bad 4x4 experience

please let me know of your advice i would be greatful !

regards
M.Saquib Baqai