Not trying to be a turd or anything here but I do this shit for a living. Premiere is the industry standard for video editing. Avid is the standard for long form projects like feature films because of its ability to handle large projects with large files; I'm talking like 8K RAW files from multiple RED cameras.
Vegas, although it is a powerful and capable tool, is in no way meant for "complicated" projects. There is a reason that no one in the professional world uses Vegas. I loved Vegas, but I quickly realized this fact and adapted.
I guess Vegas has 3D now because I don't remember it ever having that ability outside of plugins, but I would bet that After Effects is a far more capable tool for that.
You would have been right about Final Cut like 5 years ago, but ever since FCX was a thing, the entire industry has moved on to Premiere apart from a few post houses that have become too use to Mac.
Premiere is 100% the standard, but that's not important for this thread... just have to make sure the right information is out there though.