I'm glad you brought up Jigsaw. This was the webinar guy's DOM of choice. Is it something that can run on its own, or does it need to link up to a brokerage. I otherwise really like thinkorswim. Their charts are very nice and I have grown accustomed to the "thinkscript" so I can write my own studies/back tests and whatnot.I'm using Jigsaw trading's DOM . The reason I like it is it shows you what is being pulled/added to the limit orders. It is well worth the 397 dollars in my opinion.