hey trieu,
yeah saw ur past in another thread about them. looks pretty damn sweet. but out of the budget (just bought litronics

) ended up getting
http://www.clarion.com/gb/en/products/2007/multimedia/multimedia_source_unit/VRX578RUSB/gb-en-product-pf_1167298214459.html
Had everything I wanted, and i don't think i'd use the sat nav.
Thanks anyway mate