i use quotetracker....i just hit ctrl-shift-h or ctrl-shift-l any time a tick prints outta range. takes less than a second. more of a cosmetic thing though and i don't have to do it that often.
Quotetracker works only if a bad tick is in the highest/lowest bar in a chart, which is not always true. Ensign has a spike filter that does not work.
Hmmm, using IQFeed (Dynastore, feeding Globalserver for TS2000i) for almost a month now. I haven't seen a bad tick yet. At least none that are obvious.
Depending upon the use, we are willing to work with developers on the price. If the software will bring benefit to our customers, or is a commercial product that will bring us business, we would love to talk. Contact our business development group and we can see what can be worked out. Also, we have a new history server in development that will help clean things up. As everyone knows, it is a fine line between providing exactly what the exchange sends (which isn't always pretty), and creating accurate filtering algorithms. We think we will have a good solution when released, but it is in the early stages now. Jay Froscheiser DTN Market Access, LLC.