I purchased the M3i Studio Plus. Packaging excellent, I like the double box to product the bike. Parts packed beautifully. I look at the tool list, no problem I have all the tools, although a lot of buyers may not have required tools. Keiser let me make a suggestion, either go with a 15 mm or 16 mm not both, as you can get the same torque values with either one The average user is not going to have 15 or 16 mm, or even a torque wrench, maybe self tightening fasteners with loctite? Instructions are very clear. I would suggest people that are not conversant with hand tools to mask of certain spots in the event a tool slips. Maybe use one type of common head fastener, as I can see, and I’m sure it’s happened, someone trying to force an Allen key to a Hex head. Build quality is amazing.
I’ll add another review once I start riding

I wanted to ride my M3 at least a dozen times before reviewing it. Overall, it is a solid bike made from quality materials. I was excited to buy something American-made.

The handlebars were an absolute pain in the rear to install. It took me hours to get it right. You have to get them in just the right place and lean them at just the right angle because the screws do NOT want to fit in. I finally found a video from a random YouTuber showing how to get the handlebars just right. The rest of the assembly was ok with the instructions provided. If I could do it again, I would pay the extra $ to have a professional install it.

I do have to tighten the handlebar screws every few times I ride it. I also had one of the screws from the hubcap fly off during a workout (easy fix, but still). At this price point, I expect things to not be falling off or coming loose.

I think most people would do well to purchase cheaper bike, and I am not convinced the M3 is worth what I paid for it.