I just bought the M1 Spitzing . First of all it’s not $10,000 . List price is around $7500 , some discounts at the end of the year get it down further so about the same as other high end E bikes . I got the version with Fox 36 electric version160 mm and rear fox at 150 Mm travel , the R version unrestricted speed . So far I’m at 35 MPH still trying to figure the spec says 40 -45 MPH . I was told from the Spitzing rep to upgrade the tires to 2.8” front and 2.6 rears x 650 B. First of all this is a mid drive and I opted for the extra range battery from 880 watt hour to 1100 watt hour . This unit is rated at 120 nM torque it pulls hard up hill but no throttle . Range at level 5 at 550% assist is about 35 miles at lower setting could easily go 70+actual miles ? Let me say the handling is superb better than my S works Specilaized Enduro because of the weight at 58 lbs. it’s really smooth plush and really fast up hill on flats and down hill. One of the main reason I purchased this German unit is the 5 year warrantee on the frame and three years on everything else. The build quality is the best I have seen the attention to details is amazing. The negatives are no throttle , speedometer only in KPH , no dropper posts , could use more clearance to the rear wheel should have come with plus tires. The Spitzing Plus really does not have enough travel and doesn’t not come close to the suspension ( Manitou ) of the standard M1 They have improved these issues with the new Evolution. Which is not available till mid summer in the US.
I tried the Chinese options like the Frey (aluminum frame) or Dengfu ( carbon fiber frame)with the new Bafang M600 also with 120 nM . Check out post with Wayne ‘s post on his experience with Dengfu is closer to prototype he is very patient he is still sorting it out should be a nice bike when he’s done . But his purchase price is slightly less than what I bought M1 for.
As far as comparison to the Stealth their is no comparison the Stealth is a hub drive and looks to be home made and expensive and really heavy . The M1 is about half price .