Last year I grew Sasha's Altai. It was memorably good tasting, sweeter than other early determinates I've tried. However, it was the 1st to get powdery mildew but it was a bad growing year last year. This year I am trying Gregori's Altai and 0-33.
http://tatianastomatobase.com/wiki/Sasha%27s_Altai