I've been using JQuery for numerous projects over the last couple of years and I'm looking for real insight into all other frameworks/libraries as to the best option.
This is in consideration for a project that will rely heavily on div overlays (lightbox) for supplemental forms and confirmations, as well as submitting data processing through the back-end without page refreshing.
Let me know your experiences and opinions on what you use and why.
I'm looking for anything from usability, documentation, community support, extensibility, etc.
