The price isn't that bad, but there's a lot of below average "surveilance" stuff out there so be sure that you've done some research before buying anything.
(I don't know anything about the products you've listed by the way...)
You can find a review of Lukwerks here:
http://reviews.cnet.com/WiLife_LukWe...-31736924.html
Doesn't look too bad.
It would be great to combine it with this one..
What I want for X-mas #2: Draganflyer Stabilized Aerial Video System RC Helicopter