Definitely worth the money. Innovate LC1 user here. The LC-1 is no longer though, it's replaced by the LC-2 but it's pretty much the same thing. I use their analog A/F gauge too which uses a digital stepper motor and reads in 'real time'. Wiring it was a little tedious but it works great.
LC-2 The data logging feature is where it's at though, you can really break down a run with it. Plus, if you're willing to spend the extra coin for the add-on, multi sensor interface thing (LMA-3) you can see a bigger overall picture.
LMA-3 Just another tool really, there are other ways to accomplish what it does. I'm sure there are guys with enough experience that are probably a step ahead of it but again, it's good to have a run laid out graphically. If it can help a ham-fisted tuner like myself, I'm sure most anyone can benefit from it on some level.
