I own a FunFinder 210WBS, also made by CruiserRV, and their quality is excellent. Also have friends that bought a FunFinder and they are tickled with the quality. I would expect the ViewFinder line to be equally well built.
I don't believe that you will find any significant "mpg increase" with a V-Nosed trailer. There are many advertising "hype" messages inferring an increase, but, even those have died down or gone away for lack of empirical evidence to support the claim. The V nose would imply savings, if it were the leading edge of the tow rig, however, it is actually in the turbulent wake of the tow vehicle and there are many more factors involved in determining the mpg of the package than the shape of the nose of the trailer. If your tow vehicle, on the other hand had a v nose and a smooth laminar type air flow off the back of it, then the v nosed trailer would probably play a more important role. Unfortunately, the best tow vehicles tend to be shaped like a brick... I have friends that have a construction business and tow utility trailers for their work. One trailer has a v nose, the others don't...they can't see any difference in their mpg when using their F350 pickups.
One drawback to the V-nose design, at least in the RV arena, is that they tend to have much heavier tongue weights since many of those designs incorporate a front kitchen with all the appliances and normal kitchen/pantry supplies moved from over the axles to space that usually is part of the tongue. Something to bear in mind if you go that route.
Don & Bronwyn + 1 Cat; J-Lo
2014 Thor Tuscany 40RX (AKA, "The Cat House")
2015 Jeep Cherokee Trailhawk Towed