My little sister just bought an NCM Aspen and she loves it. She had ridden my Juiced RipCurrent S and my wife's FLX Gladiator and fell in love with these fatty bikes, but her budget was lower than each of those cost.
The NCM Aspen Plus does give some nice upgrades to the base Aspen as well. These bikes seem to come highly regarded both for design, construction, reliability and support. And even better, I believe they are both currently available (many e-bikes are sold out with availability dates creeping farther out every day).
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For more money the FLX Gladiator has performed very well for my wife. She actually rides 2 different FLX bikes, the Gladiator and a Roadster SE. We haven't had issues with either of them. For the Gladiator it specifies "Pre-Order" on the site. It did when we purchased ours, but it was in stock. Check with them on the phone or chat to find out for sure.
https://flx.bike/products/gladiator
The Juiced Bikes RipCurrent and RipCurrent S are great bikes, but at a higher price point. Folks new to e-bikes seem to love my RipCurrent S the best of any of my bikes they try. Great power and big battery! Availability seems O.K. currently, but some size/color combinations are OOS. They currently have a $100 off sale for Mothers Day.
https://www.juicedbikes.com/products/ripcurrent-s?variant=3914701406231
Happy hunting!