Looks good, nothing like a 3rd dimension of height in images to show
the best.

How its done doesnt matter much
We get em anyway we can.

Pole.
RC helicopter
http://www.birdcagesoft.com/heli/dave3.jpg
(old EOS5 on it, the 300D was a godsend for RC AP)

I have a rig that I pull up trees, we fire a shot bag with an air
tube.
Fired up over a branch with a pull knot and pulley, then haul up the
rig inside a box, adjust the 3 axis mount remotely from he ground to
take shots. (has zoom drive as well)
All my cam mount and control stuff is wireless.
I call that my "walkabout rig", you can go bush with it and just pick
a tall tree.
But it doesnt get much use becuase I  dont go bush much myself.

One of these day when I get time Ill get to putting some of those up
at my site from times I did venture outdoors (up the sticks), but in
the end all the shots are just low level aerial views and whichever
the method they where taken isnt seen.

check out the shots at open2view.com.au
There guys are all better photographers than I am, as in they are all
long in the business, theyve taken to the Pole rigs I sell them fast
and are doing some nice pics, faster than I figured it out.
Houses granted, but still nice aerial views.

Cheers