I don't know how many public observation decks/towers there are in Tokyo but I've been on at least three of them that I remember (Skytree, Tokyo Tower and Mori Tower) and Skytree's probably my favorite of those.

Mori Tower's interesting in that it has an art gallery and aquarium right *in* the observation deck (since it's a building and not a thin skeleton tower, they can use the interior space), and it has a shopping center below. But the view isn't that great as I remember.

Tokyo Tower is of course iconic and I'd still recommend going there because as a tourist, you kinda have to at some point - it's one of the obligatory Tokyo sights. The tower itself is ok but it is *very* touristy and crowded and you can't go very high. I personally think this tower is better to look at from the outside than the inside these days.

Skytree is just amazing in many ways, though. It's gigantic, and the observation decks are way up high on it. There's really no better view of Tokyo except maybe from an airplane.

I would recommend those Fast Tickets if you can get them. My wife and I stood in the regular line, which wasn't that bad but it did take about 30 minutes to get through. That's *after* the wait until your scheduled time - the time on your ticket is just the time you can get *into* the line. We went in summer as well and like many places in Tokyo, the air conditioning wasn't cranked very high - it was still hot and sticky as we waited. The decks themselves are well cooled, though.

I do recommend going all the way up to the Tembo Galleria... the view itself isn't that different but a) be honest, this is probably the one time you will go up in Skytree, and b) the gallery itself is pretty neat, because you're literally just on an enclosed walkway that's bolted onto the side of the tower. It feels a little dangerous. The walkway also spirals upward, so you can see one end from the other when you come back around, and there's a photo service where you can have your picture taken through the glass at the other end with all of Tokyo below you. It's kind of a unique angle.