GPS comparison personal test

For anyone interested, I took a little run the other day from Zig Zag near Lithgow along Blackfellows Hand Track, across the Newnes road and along the track to Baan Baal Gap then out onto the main road at Ben Bullen, up to Capertee and then Glen Davis. I wanted to test my GPS devices and see how they rated. The route did not have much mobile reception on my Vodafone network so was a pretty good test of the GPS only.
My candidates were a 7" Chinese no name running full Oziexplorer CE, an iPhone 3gs running Memory Map and an iPad 3G running Memory Map.
The Chinese no name was pretty excellent, never lost signal, can run IGO turn by turn or Ozi and is great value for money. The screen is harder to see in bright light and some of the maps (100K NSW) were difficult to read even at 7" but that could be my old eyes.
The iphone was much easier to read but nowhere near as accurate. Several times it lost a fix and couldn't get it back. I rebooted it (hard off sequence) and both times it got a fix again but not quickly. The memory maps were only 250K so the detail wasn't great but very easy to see. Overall though it was temperamental and a lot of fiddling.
The ipad was pretty brilliant. Very easy to read and very accurate. The antenna must be huge in comparison to the iphone because it never lost signal. The screen is by far the best of the lot. The only problems I had with it was finding somewhere to put it and the fact that the car chargers don't seem to be able to provide enough charge while it is being used. This causes Memory Map to keep blacking the screen to save power which is an annoying trait in a gps application.
I have the Sygic turn by turn street maps for the iphone and ipad and they are quite good much like TomTom. Its good that you don't have to pay twice to put them on each device. You have to pay through the nose for Memory Map and I'm not sure of the value. The big value winner is the no name 7" even though under some circumstances it is a little hard to read. I hear that Ozi will be releasing an iphone/ipad version in the new year. The website says they have all the development equipment. Priority one is the android Google version first though.
I hope this has helped some people.
Cheers Mike