If you only prefer 1 of the two then u go for 4-4-2 Classic...very balance formation.. then 1 more thing..4-4-2C is the counter formation for the other one...I iused 4-4-2C beat that formation countless times
But again, like RJSlow said..it all depend on your team quality, player roles u have and also depend on who is your opponent and which strategy he uses..no any formation is "Ultimate formation".. just is good or balance then this is your choice: 4-4-2C..
In my case, I don't stick in 1 formation..I have a few alternatives...