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For me Verilog is closer to describing HW and allows an engineer to do what they want. It is like a sports-bike. It will get you there very fast and you can cut a lot of corners. But, watch out or you will be in a ditch pretty quick.
For students, it is most important that they learn HW design before learning Verilog or VHDL. They need to understand the parallel nature of HW, and should be familiar with state machines and Karnaugh map reductions. In general they should not be writing shifters with for loops. Both languages allow you to describe HW that looks OK in simulation and has a whole host of problems after synthesis. I would teach Verilog because the language will not force good design and the students will be forced to learn when their FPGAs have problems. VHDL, on the other hand, will provided training wheels that allows the user to not truly understand what they are doing and still pass the class.