elguido in terms of ROY, out of all the aussie based plays it is the most likely to have a BRM/UMC type shareprice gain.
myself being a momentum/short term based trader, I am prepared to take on more risk than most in search for greater returns, using this trading stratergy has served me well in the Uranium/Iron Ore/Coal/Agricultural sector booms.
In this more settled investing environment some of the spec names provide higher short term percentage gains potential, so for me GDA and ROY are two of the best short term trades based on upcoming newsflow.