I have just picked up a DL1 with Dash3; have also used Trackmate in the past, and have used AIM systems for a good 5+ years now as well.

The RaceTech stuff is definitely more advanced; that's why I went to it. The system will ultimately be going into my DSR, and be used for engine and chassis development. I need CAN and multiple input capabilities for that - shocks, engine data, etc.

GPS capability upgrade was another big reason to migrate from the AIM stuff (available there but quite expensive).

The Trackmate seems like a much simpler system - in a good way. Much better suited it seems for a less-experienced user to get up and running, start logging data, and make improvements. But it does seem less suitable for use as a comprehensive dash as well, as it seems you've noted. It's more of a standalone driver development tool only, it would seem.

From your comments, it sounds like you want a bunch of inputs... but not a dash. What then are you trying to do, exactly?