I used to have NAVMAN which is by NavTECh and doesnt let you add to the POI's.
Not very good i know. I changed to TOMTOM but now use the built in SATNAV On my X5.
Be really good if we could add our own POI.... maybe speed camera locations ...

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3.0D Sport Auto, CARBON BLACK! Grey Leather, Smokey Grey Trim, Running boards, auto dim folding mirrors. 6 Disc CD Changer. Tinted windows. 19" style 132 Wheels. PDC.
Sports Pack. 6 Speed Steptronic. Communications Pack - SATNav MKIV, Digital Television tuner with Teletext.