In today's match-up of The Motley Fool's Better-Buy Tournament, 3D Systems squares off against Universal Display in a battle to determine which stock is the better buy now. The 64-company tournament pits two Motley Fool analysts against each as they make the case for their stocks, with the winner determined by you, the readers.

Leading 3-D printer maker 3D Systems (DDD 2.31%) has so many things going for it, argues Motley Fool analyst Sara Hov. Exponential demand has far outpaced production. Unit sales tripled in 2013, and fourth-quarter 2013 backlog more than doubled year over year. To keep up with all this demand, 3D Systems is doubling down on its research and development investments. It's also partnering with several companies including Google, Hasbro, and Hershey, so there's a lot more innovation to come from this Best Buy!

Universal Display (OLED -2.06%) is bringing things to light, according to Motley Fool analyst Simon Erickson. The company's organic light emitting diodes ("OLED"s) shine brighter and consume less power than traditional technologies. A boatload of new opportunities are coming online in 2014 -- including LG's big-screen televisions, Samsung's smartphones and tablets, and a new class of wearable electronic devices. This spells big growth for the company's OLED material sales, which increased 115% last year and drove revenue and profits to record levels. As the world becomes increasingly mobile and power-conscious, look for OLED to continue to shine.

Watch these analysts square off in the video below, then vote for a winner. Then check out the other companies in the Motley Fool Better-Buy Bracket. 

This year's winning stock?
There's a huge difference between a good stock and a stock that can make you rich. The Motley Fool's chief investment officer has selected his No. 1 stock for 2014, and it's one of those stocks that could make you rich. You can find out which stock it is in the special free report "The Motley Fool's Top Stock for 2014." Just click here to access the report and find out the name of this under-the-radar company.

Cast your vote in the poll below the video!