Went there on my own, prepared for a heart-moving and dramatic experience; however I didn't have much time at my disposal - and didn't expect the Museum to be that big. Besides it's design prevents you from quickly "browsing" from the beginning to the end - you have to go through all the expositions, one by one. Actually the design of the Museum calls for spending a lot of time in it, sometimes just quietly sitting in darkness and watching the filmed accounts of the events, interviews with the survivors etc.
It certainly is a wise way to prevent the "just-curious" and disrespectful visitor from unthinkingly thumbing through the pages of history which scream with pain and tragedy. However since there are lots of great books and movies available on the topic, the history as such is, I guess, quite well known to the majority of those really interested. The real task and challenge is - IMHO - to add an emotional, rather then intellectual, dimension, to involve the visitor aesthetically, rather then informationally. Hence, the main impression - IMHO - is produced by the Hall of Names (within the Museum itself), Hall of Remembrance and Children's Memorial - the place where I just couldn't stop myself from crying! (You have to have kids of your own to really appreciate it's heart-breaking metaphor!)
My conclusion: if you saw the Hall of Names, Hall of Remembrance and Children's Memorial - you've seen it all. But visiting these three gems - is a must!