Ditch the old 283s?

My old "take it and run" set-up of 4 Vivitar 283s has become more...interesting...t​o work with since the trigger voltage would fry my digital camera. I DO have a WEIN Safe Sync, but it sits a bit loose in the hot shoe. The other flashes fire by optical slaves.
Is it just time to join the modern strobists out there and grab some Yongnuo (or similar) flashes? (I'm thinking something with built in optical slave, adjustable power level, and low enough voltage that I wouldn't fry a radio trigger/receiver system.)
Thoughts?
Recommendations?

The 283 is a beast. Hard to beat a flash that has been around for so long. But with newer tech comes newer features.

Personally I'd sell them and move into something new. If all you need is manual flash then it's hard to beat yongnuo's 560 system. The 560iii and 560iv can both be remotely controlled (power, zoom, and firing) by either a 560-tx or an on camera 560iv in tx mode. Or remotely fired with the yn603 (but then you don't get remote power and zoom control)

If you need ettl then there are a TON of good flashes made in varying price ranges (from the fairly cheap yougnuo 565ex to the fairly expensive canon 600ex-rt)

You can keep them for manual off-camera flash using optical triggers.
You can try selling them, but used value for 283's is around $10, maybe $20 if you're lucky.
Or contact a public high school or college that teaches photography and donate them for a tax write-off.

I would donate them with the hope they might help a student.