I like the original partly because of nostalgia, partly because of its groundbreakingness, and partly because it was good. The writing was smart.
I found the second one to be funnier. I prefer normal Buzz to the one who thinks he's an actual space ranger, so that was a plus too. I liked the introduction of Jessie and the whole Woody's Roundup backdrop
With the third one I appreciated the tone and mood. It was more emotional too. And I think it really wrapped everything up well, it respected the series and the audience.