I went with a single full tub and LOVE it. I wouldn't for one minute change it to a divided sink.
I had a stainless in my first home, and decided I wanted a white ceramic in our new home. While we rented during the building process, the rental unit had a white ceramic. Boy am I glad! I HATED it. It showed every gross little thing that was not washed away immediately! And my spouse is not the best about rinsing things before leaving them sitting in the sink... Ewwwwwwwww.
I opted for a stainless in our new construction, and am SO glad I did. I thought I didn't like it when it was all I'd ever had, but now I know better.
Be sure to go with undermounting, whatever you decide on for the material.
If you have ever have ever had to scrub the turkey roaster after Thanksgiving or Xmas meals... you will be SOOOOO glad you have a full single tub!
My mom went with a 50/50 because she figured that she could keep one side clean for "use" (washing veggies, etc)... and the other side for dirty (for my dad to set his dirty dishes, etc)... but it just aggravates her.. because she expects one side to be clean and HE has no compunction about rinsing goop off into the "clean" side or setting his dishes in whichever side has the fewest items in it. lol
I can wash all kinds of things in my sink and never worry about banging them against the sides (tall glass flower vases? no problem. Long handled frying pans? not a problem in the least. Need to set a casserole flat to soak for awhile? Plenty of space and no need to turn it halfway through so the "other side" can soak..).
I just use comet or vinegar or bleach, or whatever to clean it.