I'm looking for software that will allow me to do comprehensive backtests using relative strength characteristics. I use Tradestation for most of my work but it falls short when it comes to using baskets and doing relative strength relationships for back-testing. For example: I have a formula for calculating relative strength over the short term and long term. I would like to back-test a strategy whereby, on any given day under certain conditions, I purchase one or more of the relative strength leaders in a given basket and exit at the end of the day or on the open of the next day. I cannot easily do this with Tradestation. Does anyone know of any product out there that makes this kind of analysis easier? (Does wealthlab allow you to do this?) Thanks. -eLindy