Quote from hajimow:
I don't look at the charts when I trade. I just focus on 10 stocks and QQQQ and SPY. Thats it. I got 84% last year on 100K account. I look at the chart after the market is closed to find the best trade for the next day. By the way, I am not a full time trader and I get very busy in my job.
I think if you're an active daytrader, 2 monitors is really the minimum. I could perfectly 'do my thing' with 3 monitors, but it means you will swap pretty often your L2/chart windows between stocks. So, having more than 3 or 4 monitors isn't really "necessary" IMHO, but it just makes your life a bit easier
And like said before, you can buy good 19" TFT's for like $230 already nowadays ...