Please post more metering plugins.
here is a freeware one :
http://www.mzuther.de/en/software/kmeter/ use
Normal, RMS and Peak.... hit Expand for a more detailed level.

Some metering plugins seems to be " off by " -3 db " less reading.
There's a difference in LUFS and RMS reading. one use square pulse reading another use sine wave reading.
thats why we get the -3 / +3 db diffrence.
Personally i like the RMS reading, as an accurate metering.
Like the wavelab and K-Meter reading.
This is LUFS reading :
http://www.klangfreund.com/lufsmeter/ showing -3db less than actual reading
of wavelab RMS metering. Using this meter will make you mix 3 db harder than ordinary rms !
so lets say u mix with it and go for -12 LUFS, you actually have -9db RMS level atleast, just for the record.
Cakewalk need to get a meter like the peak and rms meter in steinberg wavelab
(Best meter i know of ) at present time.
It's one of the most basic mastering tools...
Some Info :
http://productionadvice.co.uk/lufs-dbfs-rms/ EBU R128 / LUFSEBU R128 / LUFS :
http://www.youtube.com/watch?v=iuEtQqC-Sqo -23db LUFS as standard !! Crazy ..... that will be like -20db rms ? way to low you ask me !
if they had said -15 LUFS, i would agree.
I prefer it around -12db rms, for Acoustic / singer & songwriter / classical etc.
for punchy music
maximum down to -9db RMS, for Pop / Rap / Rock music etc.
Below -9db dynamic range, audio start to suffer in detail, clarity, and it also start to distort
also start sounding harsh and hard mid ranged as more and more as you push it.
Jan S K