02 sensor data loggers, which do you like

Thank you both!

The problem is that i'm a complete idiot, when it come to this stuff, not so good with a computer as well.

So i look at the data logging stuff that has the software CD to install it. Cause i don't have a clue how to make the laptop communicate with the gauge/controller, exc. And they are the 6-800 dollar units.

TrailBeast,
So that one will allow me to view my run after? aka playback mode?