I would only consider a vertical rack for more than 2 bikes. Its just that convenient. Not to mention with vertical rack you don't really have to pick the bike up, which is nice for you wife.
It really all depends on how much you want to spend. In my opinion there are 2 different classes (and $) of vertical bike rack, basically powered and non powered.
I have had a Velocirax for 3 years and have done well over 5000 miles with 5 ebikes. We have had zero issues other than the rubber straps delaminating with they replaced for free (ours stays attached to a vehicle outside 100% of the time, year round. It has never been in the garage since unboxing). The kids can load their own bikes and all I have to do is strap them down. We are completely happy with it and will always have a vertical rack.
That being said, if I were to have to replace it I would probably pick the Thule Revert
@Robstyle mentioned. It was not out when we bought ours or we may have ended up with it. I have not been able to personally put hands on it to see the quality but knowing Thule it's bound to be good. The main reason is the assist up. With 5 ebikes its all I can do to push the Velocirax up. It would be nice to have a little help for the same money.
Then there is the other class of racks, the powered. They are more money but will lift the bikes with power. One is the Revel Rack that you found and the other is the Bike eRack from Canada. It will actually lift the bike from the ground. They also offer moto options for dirt bikes. Both of these racks are pretty much double the money of the non powered racks.
All that to say we are currently trying to get a van. After lots of traveling with the bikes on the rack we have come to the conclusion that's what we need. Not only do we not have to worry about theft (I often stayed in the truck while the family went into stores just to watch the bikes, even though they were locked up) but I have had 2 different instances when some or all of the bikes brakes were contaminated on a long trip. The only conclusion is both trips involved lots of rain. I think the oils from the road surface were slung onto the bikes and ruined the brake pads. Nothing is as bad as driving 6-8 hours somewhere to ride and pulling the brakes and getting nothing.