Mostly going to have to agree on that. At this point I don't have any real use for MM except for a tiny handful of corner cases like hellhounds. MM3 covers epic tier far better, the epic monsters in MM were a joke from every account I've seen. And a new DM is going to be better served by reading the included adventures in the MV and DMK and getting ideas for encounters from there.
Speaking of the adventures, I finally had a chance to read through Cairn of the Winter King. I am generally the first person to bash WotC adventures for being boring grindfests, so I am very pleased with this one. The start actually gives some decent RP suggestions for the citizens of Fallcrest, and the main part of the adventure feels like a good old school dungeon exploration adventure. There is a bit of meh in getting from point A to B IMO, but overall it's far superior to the average adventure, I'd say about a 7 out of 10. It could use a bit of adjustment to really catch the old school feel, but its an excellent attempt to recapture the feel of the old dungeon modules without having the bizarre "gotcha" traps and such.