This is democracy in action. Whatever gets the most votes, gets hooked up to my car. I'm also ATX for now, if that helps any decision. I also have a laptop, and a Palm, and an Ipaq, so I don't care what it runs on.
And if you vote other, you must post which one you think is best.
#77323, "RE: DATALOGGERS?" In response to Reply # 1
Well, I'm a huge fan of the PocketLogger from http://www.digitaltuning.com I think there used to be some ATX connectivity problems but I remember run4cvr saying they were resolved. He would be the best source of info though. I always got a good sample rate (16 samples/sec) and found it's logging capabilites to be awesome. I don't have a need for a laptop and don't feel like taking one in the car with me so a PDA seems right up that alley.
#77326, "RE: DATALOGGERS?" In response to Reply # 2
Another PocketLogger fan checking in. I'm also not sure about the AT issues, but like Uber said, talking to run4cvr is a good idea on that one. I don't even own one and it's paid for itself in helping me to diagnose different problems. I would highly recommend it to anyone.