what are the differences and which do you guys prefer... ive heard the Innovate is really nice.

 

The AEM gage doesn't report afr's below 11 or above 17 I think, got rid of mine as soon as I installed it cause with the rotary I needed the data below 11:1. The datalogging of the raw output was flawless and agreed with the local prosche shop's $300+ sensor.

I prefer these http://www.plxdevices.com/onlinestore_domestic.htm#q4

 

I had problems with LEDs burning out on my AEM. It may just be the Vegas heat getting to them, but still.