SMART is cost-effective, conventional rail technology, a project with a solid financial plan, and honest ridership projections. Perhaps too honest, since the upfront description of what the project can and can't do has given fodder to adversaries.
With SMART the north bay has a chance to channel their future growth into some something tolerable, and turn exurbia into something other than a nightmare of long-distance car commuting.
The BART-to-SJ project is ridiculously expensive (a 16-mile subway through the suburbs, dug underneath an existing railway right-of-way?), claims laughably high ridership estimates, and is so fiscally reckless as to endanger every other transit project in the south bay. Yet it's popular with Silicon Valleyites who are wowed by technology but have no understanding or real interest in using public transit.
Vote this turkey down and force the VTA to get their financial house in order, and connect the South Bay to the East Bay with something that's affordable and will actually work.