Could have sworn this had different values when I looked earlier 
Yes, you may swear. Do you ever get tired of yourself? I do ;-)
I got to the earlier values based on eagle-eying the peak indicators.
But then I focussed on the needles a bit more (which I find more important), and they could use a tiny tweak to make them slightly faster.
(without harming the peak indicators)
I've decided to stick with version 8.0 of the plugin, partly because you put so much effort in using RMS as the basis for your calibrated meters that I just don't want to compromise by using "mobility settings averaging" instead. No shade to you BoringName, but that just seemed like a step back to me after the time you had taken pouring over precision, etc with the meter's development.
My 3 cents on that:
The only reason for me creating these 'calibrated' versions was for testing purposes, and trying to get my head around all this VU meter and levels stuff.
But the end goal for me was always to have meters that are indicating something that my brain agrees with.
If you like these 'calibrated' versions, make sure to back them up, because there's a good chance I won't maintain them, or even remove them at some point.
I care about:
- the needle being responsive starting at very low volumes (note that many 'professional' meters don't care about that part of the scale at all)
- the needle being allowed to move a bit past the '0 dB' indicator (which is also customary in recording studios)
- the needle making the best possible use of the available space on the scale
Also, 'accurate' is a term that should probably never be used for any VU meter.
It's always some method of averaging and some compromises and design choices.
And there are also many variations on how recording engineers prefer to tune (or calibrate) them.
So that can differ from studio to studio. Or depending on recording pop, classical, spoken word, etc. etc.
The only thing that can come close to being accurate are peak indicators.
So that's why studios use both VU meters and peak meters. They complement each other.
So having (or asking for) a VU meter that indicates peaks doesn't really make much sense.
And what is great about BoringName's implementation is that we can now have both of them in one meter.
The needle doing VU, the peak indicators doing accurate peaks.
As I said before, I don't think either foobar2000 or AIMP can do that?
And when it comes to proof and pudding: comparing the needle action of all three, I personally like BoringName's the best.
So to me we have a winner.
Let's also remember that what we are talking about here is a meter for a consumer audio player.
Not one for a studio recording tool.
Different purposes, different requirements.