I've used the TradeLog program for my 2002 taxes.
I decided to use the product because I thought that the value of time it'd save me and my accountant would exceed the cost. My acountant uses the TradeLog program as well.
I used TradeLog to properly calculate the wash sales effects. Were it not for that, I would have simply used Quicken.
The TradeLog program is not totally intuitive. It requires a bit of getting used to in terms of the user interface, and how the program does its job. Once you figure it out, it works very well.
When your broker changes the format of it's statements, TradeLog will need to be updated as well. I've found that they update TradeLog very quickly in that event.
Overall, I'd recommend TradeLog as long as the you believe the time savings will exceed the program's cost.
-- ITZ