After 13 years of Parametric 3D, my opinion...

Aaa! Well, you obviously haven't tried VX!!!!

Considering that half the component technology that they use (and probably the two key componenets- Parasolid and D-Cubed) come from UGS...
Ken

What I meant to say before prematurely hitting the "Send" button :)
Considering that half the component technology that they use (and probably the two key componenets- Parasolid and D-Cubed) come from UGS... each Solid Works sale lines UGS's pocket as well which helps promote the likes of UG NX and Solid Edge and furthers the development on the componenet technology. Even Inventor has to line UGS's pocket since they use D-Cubed :)
Ken

No doubt that the Parasolid kernel is the one to use as it is the most stable.
I never had a turbine model crap out on me when I was using UG. The Spaceball control with 3D crystal-eyes was a spooky interface, like science fiction.
Besides CATIA's proprietary kernel, the 'other' kernel I have had stability problems with. If you slice a parabolic surface the wrong way you crashed and burned.
As long as Solidworks continues to use the Parasolid engine with their beautiful interface, they will do well.
VX...to me that is just nerve gas stored where I use to work near Umatilla. Seroiusly, I have not tried VX so I can't offer an opinion. I would like to see more about it, but all my Google searches come up with nerve gas. Enlighten me.
WV

It was meant in jest, but I'm sure someone will come along shortly and tell you all about it.
Curious about the "other" kernel; Granite or ACIS?

ACIS has given me grief many times.
I won't say what product, just that the ACIS kernel has limitations.
WV

Try in Google: VX cad or Varimetrix
Instead of plain: VX

VX gas, VX cad. Don't be so picky!
Ken