I think it depends a lot on which team you and who you're playing against and the circumstance.
Like, I hate all the Barca and Brazil choosers online who just do cut backs with Messi, Henry etc. So it gave me enormous pleasure when I chose Galatasaray against Barca online. 87th minute and I'd held it at 0-0 against a player 2 divisions higher.
Messi was through on goal, one-on-one. My keeper scrambles at Messi's feet and takes the ball. He gets up and kicks it upfield. My SS drops deep and flicks on the kick at the halfway line. The ball runs diagonally inbetween Puyol and Milito with my Galatasaray striker bearing down on it and I hit it first time from about 30 yards and it cracks off the bar in the top corner and rustles in teh back of the net.
Full time whistles blows seconds later and I win 1-0. That was my favourite ever goal.
However, I generally prefer differing goals. By that I mean ones you don't score usually. Like good passing moves finised with a cracking finish or a cross from out wide and then a flying volley from outside the box flies into the top corner.