If you are after the "ultimate image quality" in a Rollei, and have a lot of cash, you can look at the 2.8 GX / FX. Basically the same Planars as earlier 2.8, but with multi-coating. They shine with color slide film and will provide lovely results when projected. I photographed a tree one day with my FX (*) and when I saw the picture projected, the texture of the tree was so real, it seemed I could touch it. Out of this world.
(*) which I got at some point when they were more affordable!!!
That said, it depends what you look for in a picture. I really like the kinda "dreamy" results my old battered 2.8E is producing. That camera is a well worn out sample I got for cheap. Love the results for black & white.
But all Rolleis (or Yashica or ... - insert any TLR brand here, except maybe the cheapest modern knock-offs such as Seagull), even with simpler optics, will provide excellent results. We have beautiful, well detailed, prints done with my girlfriend's Rolleicord.
By the way, +1 on all has been said above on usability, ergonomics, pleasure, beauty of the tool itself, and excellence of the results.