You can get RY4 flavoring from ecigexpress, and it is very sweet.
Or if you have some sweet flavors lying around, you could try mixing. One of the first juices I bought was JC's original tobacco. I was a total n00b and bought 30ML based on the good reviews I had read and, of course, I hated it. A few weeks into vaping I dumped it into a glass along with about 40 ML of random juices I'd bought or gotten free but didn't much like (Green Apple, Cotton Candy, etc). What came out wasn't awesome, but it was at least usable. I'm a cheapskate, so I forced myself to vape on that for a week until it was gone.