Sure....I'll give you my .02
I've been riding motorcycles for over 30 years so my first priority was to get one with a decent top speed (but still legal in the US) so 28mph with a throttle.
Yes, there are TONS of different ebike companies popping up all the time. I was focusing on the more popular ones (RAD, Volt, Biktrix,
Ride1up, Luna, izipelectric) that I read from this forum and
Aventon was mentioned.
Budget wise, wasn't looking to spend a lot on our 1st ebikes (under 2k per bike) but from the reviews, knew I wanted hydraulic brakes(better for higher speeds, seems to be less maintenance), rear hub (less maintenance to the drive train - chain, sprockets) , suspension wasn't really needed (more maintenance as well) so that helped narrow down the field.
So on to Aventon, I first emailed them and they were very responsive to any/all questions I asked. Was initially looking at converting our existing bikes but read and saw numerous horror stories of frames, forks braking and going 20+ mph I wanted something that was designed for those speeds. Found out talking to Justin and Luis at Aventon that they design and make their own frames and forks, specifically for ebikes. Not knocking the Chinese ebikes that a lot of these companies are rebranding as Aventon also uses those components. Just liked the vibe of Aventon, very responsive to my inquiries, and the Pace 500 really has decent components for the price. Checked all my boxes...
I have never ridden or see one in person as they are in California, not aware of any local bike shops that carry them so it was a sight unseen purchase.
Hope that may help in some way. My recommendation is determine what you really need out of an ebike and it may help you narrow down the choices as I have done.
David