I'd at least like a company I know I can contact. My first ebike was from Ariel Rider, and the battery failed 15 months after I bought it. Which sucked, but at least I could get support to buy a replacement battery, even though they didn't sell that model anymore. The company also had support that helped me spec the right brake pads, etc. for maintenance. It's still running fine now, chewing through tires, but if I had to buy one again, I'd probably pick a bike I could get serviced in a bike shop instead of fussing around with email support and trying to do the grease monkey work myself.