Truth be told, when reading about SORR, I really think Early Retirement Extreme's 38 part series really does look at quite a few angles. Trinity Study, references to Kitces, Bogglehead theories, etc. The proof is in the pudding; he's pulling data from 1871 to 2016-7 for most of his work, best or worst case. I don't see many other sites, or people here quoting much beyond "well, I see this one person it worked out for, I'll do what they did" sort of stuff.
I'm a big fan of workable data. If he says 60/40 bonds at the time of pulling the plug, so be it, I can get behind that. Also the why, the pitfalls, mortgage vs bond planning, the rest of it. Better yet, I completely agree with 3.5, or even better 3.25%, because the numbers look a lot more secure. Not that 4% can't be done, or that it won't take me that much longer, but a lot of the data shown, shows greater success.
It took me quite a bit of time to read the whole series, and I refer to it often. Yes there's other work out there, but how often do they overtly challenge each other's thoughts like this? Not saying it's perfect, but I really do respect the style in which it was presented, in the fact it gives you critical thoughts on things like the almighty Trinity Study, among others. If it doesn't answer some, if not start the investigation for the entirety of the question, and frankly whole discussion above, I don't know what does.