Economy Class seats - worth paying for extra legroom, more recline, or a row of 2 ?

[Doc Alan]

You may get to give an old obese woman that stinks of pee mouth to mouth

Exactly .... and then be sued for not doing it right .
I've opted for the Economy Comfort seat giving extra legroom ( 34" - 35" compared to 31" - 32" ) and more recline ( 6" - 7" compared to 3.5" ), in front of the Economy Class cabin, for 90 GBP.