Best off camera flash to use
I have an Olympus E5 with an on camera Metz flash that I use when necessary. I also have a very old Promaster (used on film camera Canon AE-1) flash that I use for an off camera flash for inside photos with a slave unit to trigger. It works ok but would like to get another flash with better capabilities and settings to use the same way. I realize that some say you can buy them off EBay reasonably but would like some input into what brand you would recommend looking for if you have had experience with them and you have used these with great success. Not looking at setting up a grand studio since I mainly photograph people and family and will also do some senior portrait shooting in the next few months.
Thanks again for your input and suggestions.