Wondering which GPS iPhone systems people like?

I have;
Trails Lite; and
GPS Lite - MotionX

I quite like Trails Lite, integrates with Maps, tells you the following;
Distance (km)
Duration (h:m:s:)
Speed (km/h)
Pace (mins/km)
a few other things,
plus Start & Finish Times.

The speakers on the iPhone 4 are pretty good too. I've been setting the iPod part to speaker mode, without earphones, so you can hear the birds, and the music !

Now I just want a waterproof iPhone, and recessed deck mount !

Trails Lite also looks like it would be good for cycling.