I've never been able to get excited about the porthole combos. The postwar Zenith radio design is fugly. And, as with all roundies that lack a mask, you either look at a rectangular picture in the middle of the screen, or overscan the vert/horiz so that you fill the CRT and miss the corners of the picture.
On the other hand, if you can't live without a combo, I guess there are uglier ones
Phil