Used madscan. Its okay and will do just about everything. Have a few issues with their servers going down. Went down the last three days in a row. Unacceptable in my opinion. But it is a good program. For the price you cant beat it. Has alot of features but its not geared toward scalping. The developers are more programmers and dont quite understand exactly what a trader wants in a stock screener.
I know use StealthAlerts. This program is unbelievable. They can program any trade idea you have into a ticker. This program is more for the advanced traders in my opinion. For stock screening nothing beats it. One of the coders/developers worked at a trading firm and knows what a trader wants and needs. And you cant tell once you use the software. If you have ever used Insight then you will feel at home with Stealth Alerts.