help choosing a GPS please

i have had a look through this section already but didnt really find what im after.
id appreciate some advice on my purchase of a hand held gps to go bush walking with. i know with the 4x4 ones what is standard but a little clueless with these smaller hand held ones.
few questions
1. are maps built in like with offroad 4x4 units VMS/Hema etc or are they just using the gps signal?
2. are tracks on these maps so i can see where to go or is it more for putting in waypoints to find my way back etc?
3. im not really fussed on brands, it doesnt bother me, but is there a particular make./model that has more extensive mapping than others? i will be using it 99% of the time for south east qld/northern nsw.
4. what kind of battery life is to be expected from most models?
I looked online a fair bit the last couple hours but unlike 4x4 models most of the info i found was from overseas.
oh also, my partner and i have iphone4/iphone4s/ipad... is there anything worthwhile on there? i know mud maps got very mixed reviews with 4x4ers some loved it some thought it was rubbish. we wont be using the app as our main device, the hand held will be BUT it would be good to have something anyway. i have motion x which i use to record some driving/hiking but i was thinking something with topo maps would be good
like i said, i tried searching for some info on here first - found similar topics but not quite what i was after
thanks guys
appreciate the help
id appreciate some advice on my purchase of a hand held gps to go bush walking with. i know with the 4x4 ones what is standard but a little clueless with these smaller hand held ones.
few questions
1. are maps built in like with offroad 4x4 units VMS/Hema etc or are they just using the gps signal?
2. are tracks on these maps so i can see where to go or is it more for putting in waypoints to find my way back etc?
3. im not really fussed on brands, it doesnt bother me, but is there a particular make./model that has more extensive mapping than others? i will be using it 99% of the time for south east qld/northern nsw.
4. what kind of battery life is to be expected from most models?
I looked online a fair bit the last couple hours but unlike 4x4 models most of the info i found was from overseas.
oh also, my partner and i have iphone4/iphone4s/ipad... is there anything worthwhile on there? i know mud maps got very mixed reviews with 4x4ers some loved it some thought it was rubbish. we wont be using the app as our main device, the hand held will be BUT it would be good to have something anyway. i have motion x which i use to record some driving/hiking but i was thinking something with topo maps would be good
like i said, i tried searching for some info on here first - found similar topics but not quite what i was after
thanks guys
appreciate the help