Your expectations are extremely unrealistic. On average the stock market returns about 8%. But there are lots of funds out there that have consistantly high returns, and sometimes they even beat the market average. However, a fund could give you a good return one year, but then it might give you negative return the next year. You can try chasing the best returns, but you will eventually get burned.
But if you insist, the best performer for the past 1 year is Direxion Latin America Bull 2X Inv symbol: DXZLX which returned 122.36%. The link shows a full list.
But remember, "Past performance is not an indicator of future performance."