Just rented it from Netflix and watched it. I now want to own it. I thought it was great and so much better than the first. Ego was a legit threat and was portrayed fantastically by Kurt. The film was colorful and had some beautiful set pieces. I liked the change in tone with Drax (but do kind of hope for a future scene with Mantis saying that when she touched Drax and felt his sadness, that that is how he feels all the time, kind of like Tiny Rick. Something like that would be interesting, that he constantly is joking and laughing to try to forget how much sorrow and sadness he carries with him). Baby Groot was adorable. Yondu was fantastic. Not as much action from Quill but I didn't mind that because we got some bonding between Rocket and Yondu, more Nebula than we saw in the whole first movie, and other cool stuff.
I was already hyped for it but now I am even more excited for Thor: Ragnarok. I feel like Marvel had knocked it out of the park with Doctor Strange, then GotG Vol 2, and can't see how Thor: Ragnarok will be any different. Like someone else said too further up on this page, you can't really make the claim that all Marvel movies look alike now.
EDIT: That "Guardians Inferno" disco music video in the special features is magnificent, just a thing of beauty.