The lights pictured above are the cheap "Ebay from China" non-regulated LED's. I have them in my camper and experience no issues.
Ironically enough, its the outrageously expensive, voltage regulated LED's available domestically that cause all the problems. My LED's were less than $3 a piece on Ebay. I put them in this spring and we have been on (9) trips so far without issue. Even if the converter fries a few on occasion, you can replace quite a few for the cost of one of the expensive regulated LED's that then won't allow you to watch TV or listen to the radio.