Bec, I've seen a lot people liking Stefan and Caroline so you are definitely not alone.
At the point that we are up to in NZ I'm definitely loving Damon and Elena. I've never liked couples that were there from the beginning and get no build up and for me that's SE. DE's chemistry is amazing and I get the vibe that something more is building up with them.
Other than them, I love Caroline and Matt&Caroline (even though I know where they've headed in the US).