I have never used Vera, but I feel like the community for smartthings is very resourceful. There are many community developed smartApps that I am using that make smartThings so powerful. As far as a Web UI goes, there is a community member that is working on a webUI for a rules engine called CoRE.
Please be aware, he states it’s not even in the ALPHA phase yet, so I am not sure of the release date.