I pay $96 per month for Qcharts - this includes all my data feeds.
Software is highly personal, just like cars - you need something which does the job and which you feel happy using.
I have Sierra and IB as a back-up, but I really would be lost without Qcharts.
Having said that, I should add that I am just using the price bars and volume bars and time&sales - I don't use indicators, so as I am just looking at those bars all day long they need to be nice and easy on my eyes. That's where Qcharts scores over Sierra. And Sierra doesn't have time&sales.
I know someone who has managed to get their eSignal to look like Qcharts charts, with much effort though.
So it's horses for courses, and always will be - that's why it's so wonderful that there are lots of software programs to choose from to fit a) your style, b) your budget.