I'm not sure that the OP was asking for dedicated flash recommendations; just a suggestion on replacing the V283. None of your cameras require a dedicated flash; as none of the have TTL flash metering. All that you need is a hot shoe or a cable that gives you PC connection on one or both ends. The V285 requires a special cable to connect to a PC port on the camera.
https://www.bhphotovideo.com/c/prod...Jj-QlXNydRanSEMoM5UQ57z8IwEElLOYaAoX1EALw_wcB
You can find a Vivitar 285HV on eBay or used from just about any of the online sellers, like B&H or Adorama (
https://www.bhphotovideo.com/c/product/802210631-USE/vivitar_233965_285hv_flash.html). But, there are many others to choose from; lots of Chinese makes that are in production today. You used to be able to get a Lumipro 180 from Midwest Photo, but it looks like you can't any longer. If you don't mind the weight and size, you might think of getting something like a handle mount flash (Sunpak 544 or Metz 45 or Vivitar 3900).
You might look at something like this for a standard flash shoe:
https://www.amazon.com/Meike-Speedl...EANSPDVN23P&psc=1&refRID=DG801J15QEANSPDVN23P
This flash is non-TTL and has manually adjustable power. It does not have an auto mode (auto thryristor), but you can adjust the output for the same effect. It can also be an optical slave. It says that it can be connected via PC port.
This one has quite a few more features and is a bit more expensive, but basically the same; non-dedicated, fully manual and supports off-camera slave triggering:
https://www.amazon.com/YONGNUO-IV-W.../B00PGTOX26/ref=psdc_3109929011_t2_B00004TVSP
You probably want to look for something that the same or similar guide number as the 283 (120 ft @ ISO 100 according to the manual; 60@100 is probably more realistic).
You can also use TTL flashes, but you just won't get any of that functionality; most of my Nikon SBs have an auto mode. If you need auto flash mode, then look at any of the Nikon hot shoe flashes from the SB-24 to SB-80DX (except the SB-50DX). They all have standard hot shoes and PC cable support, and will all work as manually adjustable flashes, as well as, an auto flash. I love my SB-28s on all of my old Nikons. I can even use them as TTL flashes on my more modern cameras, like my F4S or FE3A
If you want something small with just enough output for indoor or fill light outdoors, then the previous suggested Sunpak 321 is a great option. I think the Nikon SB-15 would be right in there, too. The SB-15 will work with your FE ready LED.