There is a gazillion posts about it over the last 3 weeks, but in a nutshell, yes, it's definitely worth it. I cannot find a better EDC (Every-Day-Carry) Lite.
Performance is super on NiMH cells.
The stock lense is total cr@p, as it is on all MagLites, replace it with something -- anything at all is better.
It lacks a lanyard, which is really not necessary in my case but YMMV.
Neat light, although perhaps a bit longer than it must be.
You twist the head to cut it on, like the original. Neat feature.
The throw is most excellent. It may not be the best choice for reading in bed however, for that the Nite-Ize conversion unit gives you a better flood with longer run time. As an all around light, MagLED rules.
I am going to invest in a holster for it as I keep loosing it (in the car seat usually)
I think it runs more like 3-4 times the original, given you can find the original MM for about $6 or so. Moot point here.
Bring extra cells, as it will cut off suddenly when they are dead.