Hi I'm new here. I tried to google a bit, but google doesn't seem to do the trick. I'm looking for flash system that I can use on multiple camera brands. I've noticed in my research lots are limited to certain brand. I want the system to be Useable on location/Accu/Battery Accessory friendly (S-type Bowens mount?) Decent light quality Robust Future friendly/Start small and expand in the future I don't need The latest technology Lightweight (not necessarily, but of course handy) Handy if it can be used for several types of photography outdoors/studio/portrait/product/etc. Wondering if there are certain older second hand types of sets that I should look for. Is older second hand flash set worth it? Things to look out for with flash heads/systems when buying second hand?