Solostorm here, used to use a DL1. Solostorm had the best start trigger options, and the control of gopro camera and OBD link to basic car data sold it for us. Works really well, quick to analyze between runs or sessions. It is 'enough' data to spot areas for improvement, without having to be a master at interpreting line graphs.

We never looked at DL1 data as it took too many steps to download, plot, set markers, mark runs for different drivers etc.

 

I used the Solo DL/SmartyCam for the first time this past weekend. Despite the shortcomings I outlined above, it works great.

It was so useful to see video and data between runs. It told me based on exit RPM whether to stay in 3rd or downshift to 2nd. I failed to turn into a corner because I thought I just carried too much exit speed out of a Slalom. But video/data showed I was only 1mph faster and that the mistake I made was turning and threshold braking at the same time. Driver error! Next run, no need to reduce exit speed instead turn, straighten out then brake.