OK, so I decided to give a set of the brake lights a try. Since one of you mentioned that Philips sets their bulbs to be only as bright as the standard, I went with the Pilots. They don't have ratings that are as good, but those are from Amazon, and many of them seem to be putting them in vehicles that need resistors, or they get them with shipping damage. Either way, they do work in the ROW Defender. Without, then with:
<a data-flickr-embed="true" href="https://www.flickr.com/photos/bhcmbailey/46636768331/in/photostream/" title="LED vs. Standard Bulbs"><img src="https://farm5.staticflickr.com/4837/46636768331_824258c2e4_z.jpg" width="640" height="426" alt="LED vs. Standard Bulbs"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/bhcmbailey/46584469002/in/photostream/" title="LED vs. Standard Bulbs"><img src="https://farm5.staticflickr.com/4809/46584469002_620d0b52c3_z.jpg" width="640" height="426" alt="LED vs. Standard Bulbs"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
Next two shots show the left vs. right as lined up as I can make them with a quick shot straight back. First, the parking light, then with the brake light illuminated:
<a data-flickr-embed="true" href="https://www.flickr.com/photos/bhcmbailey/46584469292/in/photostream/" title="LED vs. Standard Bulbs"><img src="https://farm8.staticflickr.com/7819/46584469292_33d2cce768_z.jpg" width="640" height="363" alt="LED vs. Standard Bulbs"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/bhcmbailey/46636768731/in/photostream/" title="LED vs. Standard Bulbs"><img src="https://farm5.staticflickr.com/4887/46636768731_66ed7e7f66_z.jpg" width="640" height="304" alt="LED vs. Standard Bulbs"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
All images were taken with manual settings so that the relative brightness can be compared. The LED side appears to be a bit more orange. When it is in park lighting, there isn't much difference at all in brightness. I like the pattern that the LED bulb has when looking at it from the rear.
When the brake light is on, however, the standard bulb is still brighter, and seems to illuminate in a "flood" better than the LED. This is disappointing, but since I plan on putting a center brake light in anyway, I think the trade off in amp draw is going to be worth it. By the time I'm done swapping all bulbs, leaving the park lights on at a dark camp sight will mean nothing to the battery.
I think I will try the Sylvania bulbs for the front park lights. I don't plan on changing the flashers only because I don't feel like splicing in the resistors right now. I have better things to do with my time, and the amp draw doesn't matter.