I would watch all the sequels if I were you Aves (hope I can call you that). I'd give the original a 10/10 and all the sequels 9/10. The original was the best, but the sequels are great too. It's a little shocking and embarrassing to watch singing dino's at first, but they don't sing too much and the stories are great. B) Besides, you actually get to enjoy the songs after a while (though some absolutely hate them no matter how many times they watch them.) I guess it has to do with how "much" you can take before you crack. Now one thing I wouldn't recommend is that you watch the LBT tv series first because they're seriously childish (but I still like them). However, if you want to see just how childish LBT can get, you can check out the link in my signature (the massive picture of Littlefoot by the Universal planet on a ledge in the middle of space

). Just click on the link "Watch/DL LBT Tv Series". It's a link to my website where I host all of the LBT tv eps I have.
A tip: wait until the words pop onto the screen and then click play. The words signify that the movie is totally loaded and ready for streaming. The words say "play this video". CLICK ON the words to play.
Oh and the signature is the thing at the bottom of each of my posts (right under these words).