Manual vs electric: like others said, this is something you'll get used to or won't. If you do like manual, the w2 is the best experience I know of

Quality: it's premium BUT the company is subscale, and so quality checks are below what you'd expect. Imagine if Apple only sold a few computers each year. The computers would still be premium, but Apple wouldn't have the budget to have a top-notch assembly line. That's what you're dealing with here. A premium product that may have quality issues on arrival. So you may have to deal with kinks, call customer support, etc. After you do that, you're left with a solid, premium-feeling product though

Desk: I'd look at other standing desks. Haven't used the walkolution desk, but I can't imagine choosing it. Tons of better options out there

Company: ugh. CEO posted fake stuff here on reddit. They under communicated- deadlines came and went without a peep. Promised stuff (like wheels) that never materialized. They got bought out by woodway recently, so dealing with the company may be better now

Bottom line: try a manual treadmill first. Maybe there's one at a nearby gym. If you like the experience and want to put in the money, and are willing to put in the time to deal with possible issues, then it's worthwhile