I have grown Sweet 100, and loved it. Sweet Million is reportedly similar. Cherry tomatoes are good when they are small and thin-skinned. The larger ones offer neither the delights of Sweet 100s nor the taste and table qualities of slicers. Yellow pear is supposed to be a delightful salad tomato, though it is, like all yellow tomatoes, mild.
Most yellow tomatoes are bland in flavor.
A much better option, if you can stand any acidity at all, is the Zebra. If you can a lot, plant some Roma tomatoes. They contain less water, so you spend less time boiling away water on hot summer days. If you make pesto, plant large-leafed basil, which works up faster when you're making pesto. Three plants spaced 16 inches apart should yield enough basil for a year's worth of frozen pesto and dried basil.