I upgraded like Dave did purchasing from Amazon except I got the 3528 flat type. All of the led's are on one side which worked fine in the flat type ceiling fixtures we have. I bought 2 packages (10 per package) and only found one that wouldn't work. I got the warm white also and you can't tell the difference in light color from the regular type bulbs. And the plastic lens is never hot like they were with the old bulbs too which is great.
2016 Wildwood 230BH X-Lite
2011 Ford XLT Supercab
2015 Days Camping : 6
2016 Days Camping : 32
Very illuminating topic.... (sorry, couldn't help myself). Interesting twist. Noticed that the LED's on many of the new units are way too bright for our tastes. We're getting a 2016 Sunseeker and the under cabinet lights above the dinette (very close to your head when seated) were so bright I reached up and turned them off while talking to the salesman. Browsing Amazon now for dimmer bubs.