EcoSoya's™ chemistry is very different from that of paraffin so please inform your supplier that you are using it. Many fragrance companies have experimented with EcoSoya™ enabling them to give recommendations. Most scents work with EcoSoya™ waxes but if you do come across a scent that doesn't have good hot and/or cold throw try another type of scent or the same one made by a different company.
Also, a proper burn pool is critical. For container candles you should achieve a ¼ to ½ inch deep (side to side) pool in about 4 to 5 hours. At this point you will have the best hot scent throw. You may need to adjust your wicking to achieve this.