Hmm, if I remember the price difference between Pioneer models should be around the thousands lang.

If you can live with just the AUX and CD, the entry-level Pioneer 1300MP is around 3k. If you want the iPod connectivity, get the 2XXX (around 4k) if you don't plan on upgrading your stock sound system. Or in the event that you might want to throw a subwoofer in the future, the 3XXX models around 5k would be ideal due to the additional pre-out.

I got my mother the 1300MP just for her daily-driven Altis. I'm pretty content naman since talaga "less spending, the better" when I was looking for a head unit. It's not like my mother uses an Apple device or anything.

Pwede din actually mga FM transmitter but my experience with them has always been that of an annoyance (ex. changing FM channels everytime malabo yun signal), personally I'd still spend the extra thousand for a brand-new head unit. Even the 3.5mm AUX would sound WAY better than the FM transmitter which has around uhh... 96kbps worth of bitrate quality.