www.quandl.com www.eoddata.com or you can use qcollector to get intraday data out of esignal classic or iqfeed.
I haven't looked into Qcollector much but it does look like a great tool to manage my IQFeed data. I use Amibroker use their plugin to manage my data but Qcollector does offer a great tool to take the data and be able to manage it and use with other software or using with other environments like R or Python. I could always export from Amibroker but for 150$(think that's the cost of Qcollector) it's a great software.
I'd e-mail Qcollector but I do believe they are not restricted by IQfeed symbol limit as their not trying to stream it real time and their software removes the old symbol and adds new so the symbol limit is never above. I've done the same with Amibroker with their wait for backfill option. It will just go through your list and remove the oldest symbols requested to keep your symbol count correct.
IQFeed doesn't seem all that concerned with demand for historical backfill after market hours when their servers are slow.
I think their intraday goes back to 2007 or a little earlier with 1min data. They can send in many intervals and think Qcollector allows for these requests.
Warning is that there intraday is not split adjusted as the community preferred this from what I saw on their forums. They also offer EOD data which will have the official EOD values and volume(volume specifically is different then intraday volume).
Depending on how you want to use the data it could be a good option. Some software allow you to waive their start up fee of 50$.
So breakdown of cost would be 50$ start up fee, 75$ a month fee which gives you delayed data and historical backfill. Realtime is per exchange and their fees. Qcollector 150$. Iqfeed does have restrictions to backfill during 1 week trial but I don't know what would stop one from subscribing, downloading and then cancelling and just paying a month. Never tried so don't know.
Just my feedback on an idea. Do your own homework as to what you want. Managing data can be a pain sometimes but know what your looking for and working with.