For Higspeed i mostly use My two Godox VL300. So far i dont have any Light modifiers or Lenses For them, but hope to get some Soon.Havent really used any of my other Lights much with the Chronos so far, apart from my two Dörr DLP820 V2 Lamps. Looking forward to buying a bunch of Godox SL200 in the Near Future. Really Like the VL300´s, not just for Higspeed, but they are also great for general Filmmaking purposes. They are great to have, and its also really nice that you can run them from V-Mount Batteries if you need to, but the SL200 are propably one of the best available options in terms of amount of Light for the Money you get with them. I assume Most People would use something Like those Single-Chip High-Power LED-Lamps like those Godox Lamps i talked about (or Sunlight If you can), multiple Brands Make similar Lamps with different Features and Power Output.