Ive used AEM, innovate and zeitronix on my vehicles.. that being said

the Zeitronix is by far the best. Its cost, sensor inputs and datalogging as well as an analog output make it IMO one of the best for the money.

Ive got a AEM Uego in my EF right now and its okay. Seems to be reasonable accurate, uses proprietary sensors (gay) and has no outputs. Decent if you just want a display and nothing else.

The innovate LM-1 ive used is absolute junk and a nightmare to keep operational. Youve gotta wire switches, recalibrate frequently and purchase addons to get the same funcionality of a zeitronix.. i will not own another innovate product.