I have never had a scratch or ding on my metal tables. I have had gouges and cracks on the plastic tables. I will admit I got one performer on clearance at the depot and 2 of the bolts weren't tight on the table and it got some rust on the table and in the frame! It cleaned up well.
I have yet to replace a good no cracked plastic table with the metal, they clean up well and do a great job. I do prefer the look and durability of the metals ones.
Side note if you have magic eraser cleaning sponges use one across the whole table rinse and repeat with a 2nd eraser sponges rinse again and you are good. I have had really good luck with this option. Quick easy and cheap