A few still use 2000i with say CSI data, but many have in-house systems these days. You see, some got used to the look and feel of 2000i and old habits...
Pardon my ignorance of p123, but isn't that a web-based platform? And if so, can the p123 guys peek at alphastocks' fundamental part of the strategy?
When I started to backtest my hedge fund I went through all the different backtesting programs from tradestation to AMI broker. The two that I found work the best are Genesis and Traders Studio. Out of these 2 I would say I use Traders Studio more for my hedge fund because it is more complex. Traders Studio really helped my hedge fund because I was able to apply advanced money management techniques to my pool of commodities. (not money management to just one market). Also Traders Studio has different levels just like a hedge fund and you combined these levels to make a full hedge fund right in the software. Traders Studio should be going level soon, so you can have your hedge fund with money management set to auto run
Link to overview of TradersStudio http://www.tradersstudio.com/Overview/tabid/68/Default.aspx Link to a video showing how to test on a portfiolo on TradersStudio http://www.tradersstudio.com/Tutorials/Videos/tabid/167/Default.aspx
It would be a formidable task to look at all the back testing programs. Out of curiosity, how many did you eventually find?