I use a combination of NavFree on my iPhone, and a Navman C40 GPS unit. The former does a pretty good job, but the latter still has some features I prefer. FI, it will announce the street name when relaying directions back to you. A big minus on the Navman is the unresponsiveness of the resistive screen. It was bearable when it was the only GPS unit in the house, but I find the NavFree to be less painful to use.
Hi use mainly Tomtom on my iPhone 4 with HD Traffic and the Tomtom iPhone holder. But I also have Sygic Aura Aus/NZ and some free one. Plus motion x for off the beaten track.
My gear 55" Samsung 4K SUHD LCD HDR , Denon AVR-4200W Reciever in 7.1.2 Surround , Denon 2 Channel Amp to power ceiling speakers , Combination of Polk Audio Fronts And Tannoy Surrounds plus 2 Cambridge Audio Ceiling Speakers Pioneer Downfiring Subwoofer , Oppo UDP-203 UHD Player , Roku Ultra , Apple TV 3