I've got Sun Gold this year for the first time and I'll get forever if I can find one somewhere. They are fantastic. I also have a red, more oblong than SG that's covered also. It is one that comes up all over the compost piles for the last 3 years and I always pot up some until time to put them out. this year I had 4 plants in a 3 gallon pot and put them in the ground the first of May. It's covered with bright red little tomatos. I don't remember the name, but they are great and free!!
I bought another Cheorkee Purple but it died again this year just like last year. It gets about 3 foot tall and covered with tomatos and starts dieing branch by branch and I never get a ripe tomato. I guess it's just not suited for my garden.
I guess I just need to stick with the little ones, I love them and they grow great!