I've used both! And they are both good (I would look at price, local support and calibration etc.). Although the IDA-4 is (I would say) easier to use, myself, I would go for the Infutest. But that's mainly because I'm a bit of a geek!
Last edited by Geoff Hannis; 17/03/0810:04 AM. Reason: Geeks get it done!