I don't know what kind of thrust figures you are looking for,but if a DLE 30 is something you are considering,then don't forget about the MLD28 from Cermark.I have one and it is a great running little powerhouse.Just read the threads here on RCU and you will also see what good service Cermark gives with this engine.I bought mine for a Dynaflite Decathlon and so far ,so good.Sorry,I don't have any experience with the DLE30 but I'm sure those who do will be giving their comments.