Apart from stock as mrsheen points out.
How fast do you want/need it to be?
Do you want automatic or manual incline control?
Do you need it to fold up for storage and are you going to need to move it? They are rather heavy and cumbersome.
I’d have another happily if I had the space. Had a Reebok machine several years ago. I though it was a decent bit of kit. Had a 10mph max and auto incline control. Was used pretty much daily by the family and took a real beating. No idea on the above machine but it looks like an updated version of what we had, or what the current quality is like but based on past experiences I’d consider another Reebok branded machine.