First the bad news...
I have used TS Pro up until about a month ago. The main reason for moving (to NexTrend) was for real time futures info, which TS doesn't offer...yet. They assure me that quotes from the Chicago Merc will be online in June or July but I'm not big on holding my breath waiting...
TS seems to fall behind during the open...not sure why but after ten minutes or so they settle down and keep pace quite well with WOW, e-signal, Nextrend and Tradecast. Those are the only vendors I've tried to date. Of these, e-signal was most timely, most often. E-signal also has some awsome time and sales info that can be used in a way that you'll get info on what the market makers are doing and to whom they're doing it. This feature really impressed me... If you want real time quotes that ARE real time, go w/ e-signal...they seem the best in this regard.
The good news...
TradeStation Pro is IMHO, the best web based system when it comes to technical analysis. If you want to test/try a system, you'll most likely be able to do it w/ TS, which is not the case with the above vendors. Honestly TS is awsome. If you can think up a study you would like to try, TS can do it.
Another plus is that you are not limited to a certain number of windows you can have open at one time (NexTrend has a limit of 12, for example). Also, there's no limnit on the number of symbols you can use at one time...e-signal and others have limits on this.
The charts look great, are easy to read, and are a pleasure to work with. One of the things that bugged me about esignal was that I couldn't get it to auto scroll to the right. New prices would just float off the chart to the right and having to screw around keeping the chart current really bothered me. I posed a question regarding this on this board but no one had an answer...nor did the esignal rep I was working with.
TS Pro has a ten day free trial and I suggest you give it a go. If you can deal w/ no futures quotes and a bit of delay at the open, you'll probably be a happy camper.
The software I'm using at the moment, NexTrend is pretty good but their news feed sucks...really, really late on important stuff. I do better listening to CNBC.
If/when TS gets a futures feed, I might go back to them for the reasons above. OTOH, I still want to test a few others like RealTick, for example...and I want to try e-signal again.
Hey, all of this is my opinion so take it for what you paid. In any event, I hope it helps.
Best regards,
Jim