Great printer. No issues. I just bought the new Ender 5 and don't need this one any longer. Only purchased 1 year ago. Only mod I've done is to 3d print a separate spool arm so the filament sits parallel to the printer, not perpendicular. I don't think I kept the original spooler arm but that's the beauty with 3d printing is you can make a new one of the original with a quick print. It's easy to find good mods online. They have ones for overhead spooling, etc.
I've kept up on the cleaning and never needed to tension the belts. Have printed with it sitting on the floor exclusively so there has been little to no vibration in the bed.
Link to spec is here:
https://store.creality.com/ca/products/ender-3-v3-plus-3d-printer