what sensors are best, NTK or Bosch

reason is, im looking at either this

http://www.ngk.com/more_info.asp?AAIA=&pid=20509

or this

http://www.rpmoutlet.com/aemgauge.htm

For some more options check.
http://www.innovatemotorsports.com/

Also the TechEdge DIY kits if you don't mind soldering.

http://www.techedge.com.au/

Sensor wise I'd go for something that uses Bosch LSU sensors, easy to get a hold of and not too expensive.

Good thinking clampy, will definately be getting myself one of these set-ups aswell after paying ozrunner a visit.
He is running the above AEM setup 5.0L hilux and is more than happy with it, this is the one i will probably go for aswell.
Let me know how you go sourcing it, i will start getting prices next week aswell.