You may want to look at the new racecapture, specs look good

https://www.autosportlabs.com/product/racecapture/

 

RaceLogic have just released their VideoVbox HD2, at the current £:$ exchange rate its probably great value right now.

I have an older system on my Atom, and its great. Up to four cameras displayable in picture 20khz GPS with plug ins from the CAN bus. It has a data base of most racetracks in Europe, and probably the states too. Its the best video telemetry system I’ve seen.

 

Racechrono on android if you can buy an external bluetooth gps that has at least sample rate of 5-10hz
even the free version is pretty amazing. The paid pro version can integrate with gopro wifi and other bluetooth device such as obd2 for engine stats

 

Solo is one of the only relatively inexpensive lap timers that has proper data analytics software for properly comparing laps. Others try and fail pretty hard at this even if they lap timer itself is decent. The Qztars lap timer is quite a nice display that provides good info in real time. But the data review software is terrible.

 

AIM Solo or Motec CDL3. You get tons more with the Motec (full data display and 12 inputs/outputs) and i2 is great for analysis.