I guess I always thought they were one and the same. We grow tomatoes here in Arizona in the winter so I have just started a few seeds and I think one is coming up today. I have three Roma's, three better boys and three brandy wines. I hope they all make it.
I bought one Roma tomato once for a shot here on 365! If memory serves me correctly, it had more contour than a plum tomato- somewhat like a red pepper but not as extreme. Anyway- these look great and there's nothing better than a tomato off the vine! Good shot!
Ian