both softwares r a waste. i have used both as well as spider iris and tickerplant. i like spider iris the most, because it has automatic scans. just tell the company guys what u want, and they'll create it for u. in metastock, u need to scan manually, and most opportunities r lost by the time u perform ur scan(esp. on smaller timeframes).
if u don't have a strategy, then advanced get is good. but the risk reward for their strategies is just 1:1.6, which is pathetic to be consistently profitable in the market. and with the high cost of the software, u will breakeven may be in only 2 years with a capital of 5 lacs.
Sumit