I've been using the Dolby Media Meter II for quite a while, and think it's good! Frankly I use it mostly as a limiter (it has an extremely transparent limiter!) and for safety as I work mostly by ear anyway, but I'd say it does the job very well where you need to be picky too! I originally bought it to deal with an extremely tight schedule with a project where I had to turn off all active listening for extended periods of time as to not risk ear fatigue and still be able to keep the mix at a steady level, but it really works wonders when optimizing mixes for TV/Commercials and setting Dolby-levels :-) I can't say it's nigher better nor worse than what you mentioned before as I've never tried the other stuff, but there are several things I like about it; like a graphical display of different measures over time, the ability to measure "absolute level" (how it will translate into voltage through DAC and anti-alias, not as a digital pattern), stability, and again, the great limiter :-)
The only things I wish could be better is that there seems to be no documentation whatsoever (I'm still not sure what differs between the different types of measures), it can't really measure single words very well (it seems to be made pretty much all for overall material loudness), and for some reason it comes on a burned disc (yes, it is a genuine retail version with the real iLok-key box and all). With a pricetag of over 5000:- SEK (~ $760 according to my iPhone) for a single plugin doing nothing more than telling level (and limiting!) I guess it might not sell enough to justify a real glass-master disc, but it still feels a little cheap of 'em...