...and to add on to what everyone else said... PLEASE PLEASE PLEASE Celtic, rent first!!!!
I can not stress this enough, you do not want to get strapped down, with a bunch of movies you may or may not like. I recommend renting them, otherwise the curiosity may get at you, until you brake and buy something that you may regret. Some are absolutely aweful to sit through, I literally wanted to guage out my eyes, and let my horrific screams drown out the pain of watching that movie, but I now know that it was horrible and will never see it again, Little Mermaid 2 was something I really wanted to see, saw it, was dissapionted with it, and will never see it again, but the good thing is, that I got to see these no matter how awaeful they may have been, I found closure, and I don't not have to look at them taking up room on my shelf. Even if you don't buy them, and your family does, they are still buying you that in place of something better, so please, rent them, I don't want to see you stuck with something you will not like.
I for one, am not even buying all of the classics. There are just some I do not like, and ones that I just wouldn't even want to introduce my kids too. So even though I am a big collector, I figure, only collect what you like, or can appreciate. Snowwhite for example, is not a fave of mine, but something I can appreciate, and when I have kids of my own, I will show it to them... I will never show them the sequels though, regardless of whether they are ok or not, cause walty diddn't want sequels, to most of his films, and the sequels are not needed...
Anyway that is my take on it.
Buy the classics, rent the sequels...
Oh there is one sequel that I do want, and that's the Jungle Book 2
I'm waiting for the SE that's going to be released, to coincide with the PE.