[BA SW]

I am not as familiar with Inventor as I am with SolidWorks, but I would say rather than switching, learn both and then you should be able to decide which one to work with. This would probably be beneficial with other situations down the road as well.
Other users have already said a few pros and cons of each but I would like to add that SolidWorks makes it very easy to create a belt in an assembly and this can also be used to create tracks for a tracked vehicle. Also, SolidWorks recently released SolidWorks Electrical. This allows you to create a schematic in 2D and then import the 3D parts (from a large library of 3D parts) that are associated with electrical symbols into an assembly. Then you just click a few buttons and all the wires are added between these components. It also allows you to check if everything fits into a certain space or clearances between objects.