IB or eSignal data for AT system?

[dcraig]

Quote from Kever:

Thanks for the info dcraig. On closer look, Open Tick is looking a bit iffy. Their forum looks like a lonely place. Searching on ET reveals mostly less than glowing comments. I'd like to see something like that take off, but the old saying about "getting what you pay for" comes to mind.

Experience teaches that the most valuable thing we have is time. I'd rather spend some money on a good data source than spend alot of time trying to make a poor one work.

How about IQFeed?

This thread prompted me to have another look at OpenTick. It seems significantly better than last time I looked and some obvious problems seem to have been fixed.

Retrieving 1 min historical data for some US stocks worked OK but a bit slow. There seems to be some big gaps in the data.

Retrieving historical tick data for some US stocks was really slow - you wouldn't want to be waiting on this to finish.

Streaming quotes and trades for a few US stocks seemed fine. I couldn't see any significant difference between OT and IB in the timeliness of the data. The data seemed accurate in so far as it is possible to tell by comparing with IB data. I was running only a few stocks.

OT has (or claims) to have historical book data. I havn't tried this yet, but it seems like a fairly unique feature.

Overall, significantly better than it was.