I used to use eSignal for a few years...I switched to Thinkorswim a few months ago...their data and charting software platform are excellent (and it's free)...so, I'm saving $250/month that I would otherwise be spending on eSignal...and I get a lot more than just data and charts...great analytical features for trading options, and the ability to import all of my personal watchlists (stocks, ETFs, indices, currency pairs, futures) that I built over the years to scan them to look for various types of trades, as well as monitor my lists throughout the day at a glance in a variety of formats...also, their support team is fantastic (available 24/7 too)...very polite, helpful and knowledgeable, and very quick to respond to questions/problems...also, there is a ton of archived videos on how to use their platform, as well as weekly live training seminars...very user-friendly!