Note: Question is SPECIFICALLY to experienced day traders who have been day trading for several years and spend AT LEAST four hours a day trading.
Atleast this kind of multi screen setup will be there when someone successfully day trading for years
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And when someone is day trading they have to look into the analysis all the time so small screen will be a bit annoying thing for them.
You would once realize these when you are already aware on how this market works and you would surely be finding out on what are the things needed for you to get comfortable towards your trading career.
When you don't know on what you are doing then having those multiple screens would really be irrelevant.If you are not a daytrader then those kind of set-up wouldnt really be that much needed
but when you are really making out some trades on active basis then you would really be needing this if you do know on how to maximize or making yourself efficient.
It would really be according to needs since we are totally different to each other.