Thank you gingerling.....I am no expert by any means. But we have owned three pure breed labs and one mixed through my years. Owning two back to back the past 20+ years. You analogy to a pick up vs a Ferrari is spot on. Labs typically drive you nuts the first 1-2 years and drastically slow down to where you only need to exercise them in the AM for a bit and they are fully content. We do love labs and they make awesome pets/companions......we miss them dearly.
The only reason(s) why we switched breeds two years ago was for two reason. My wife and I simply could not put up with the shedding, my last Lab put us over the edge; which shed uncontrollably. And secondly, I use/work our dogs for chasing geese off our property (I work on a golf course) and labs tend to slow down at an early age. Going back to the Ferrari analogy, V's are literally non-stop, with high heat/temperatures from our experience being the only equalizer. When it gets above 90-degrees here in the Northeast our two V's slow down which is understandable.
With all that being said, we absolutely LOVE our V's. BUT BUT BUT you really need to wrap your head around their neediness. From our limited (2-yrs experience) our V's are more needy than necessarily requiring exercise. Don't get me wrong, they need 1-2 hours daily of off-leash full run exercise, but especially our 2-yr old male V needs constant companionship. He clings to me like glue. Again, my wife and I would not change a thing in selecting V's, but you definitely have to get used to constant exercise and make sure someone is around them during the day. I bring both our V's to work every day and they can lay silent for hours. But leave and you'll no about it......lol. We liked our first V so much we got another when our breeder had a litter ready in July of this year. We choose a female and she does seem a bit calmer than our male V fwiw.