I recently purchased a sit & stand desk. After looking for multiple options, I decided to pick Monoprice's Sit-Stand Dual-Motor Desk Frame. I already had a tabletop from Ikea.
► 1. Workstream by Monoprice Sit-Stand Dual-Motor Height Adjustable Table Desk Frame, Electric, White - https://www.monoprice.com/product?p_i... (paid $183)
► 2. LAGKAPTEN Tabletop, white - https://www.ikea.com/us/en/p/lagkapte... (paid $50)
Tabletop Size: Length: 78 3/4", Width: 23 5/8", Thickness: 1 3/8"
► 3. HUANUO Dual Monitor Stand Mount, for 13-27 inch Screens, Each Arm Holds 4.4 to 17.6lbs - https://www.amazon.com/gp/product/B07... (paid $12)
If you're looking for a desk that will help you stay healthy and productive, this is the perfect one for you. I've been using my desk for about a week now and I love it. It has really improved my posture and it's so much easier to work with when I'm sitting or standing.