I use 1-min candlesticks for daytrading, 15 mins for swingtrading ..
Tip: If, like me, you just focus on trading open range breakouts in the first 2 hours of the day, try setting one large full-monitor advanced or other chart to just display candles from 8am til 11:30am.
This provides a closeup view that's much easier to see, than displaying 1-min candles in a 8am-4pm chart.
And note, it's critical to show premkt candles, this is one thing I really like about esignal (example, AMZN gap+ etc today, easy to see patterns in)
ken