I prefer trading mostly major currency pairs like EUR/USD and GBP/USD. I have not traded minor or exotic currency pairs till now.
traders should choose the trading pair which is more appropriate to the concept of trading that will be used , if love doing scalping , should choose the pair which has lowest trading spreads.
It is different in terms of liquidity and ability to move in trends which in part depend on how much it correlates with economic cycles of seasonal trends. The less factors affect some currency the more trend-like behavior of it we can expect.
Generally, I stick with major pairs - EUR/USD & USD/JPY. I also trade with cross at times. Tried exotic but it didn’t work out well for me.