I can't seem to decide between the two, but I'm going to say ItaTema because of their ages. She's closer to Itachi's age, I think. And there's just something about Akatsuki pairings that I love...
If we were just going on personality, though, I think she'd be best with Sasuke. He needs a girl who won't obsess over him. Plus, given her time spent around Gaara, she can probably keep him sane. That kid's got problems; whoever ends up in a relationship with him should be able to deal with him.
M u s e
Ick, but if I must choose, the ItaTema. Although DeiTema would be more balanced, I think
wink LKSDFHA,YESS!! That would be SO. MADE. OF. WIN.
...
They'd probably beat/explode each other to death before they knew each other long enough to fall in love, though, I think.
Where do you people come up with these pairings...?