I am a long-time Trek fan, going back over 20 years. I loved what they did here--respectful to the old material, but finding a means to set their own course (which, really, is necessary for any meaningful future storytelling). They clearly know their stuff, and yet are not afraid to make some brave choices. On top of all this, the new cast is top-notch. They don't impersonate the original characters so much as find out what made them live and breathe and capture those elements.
I definitely think this is worth at least the price of a movie ticket if you are on the fence.