I think Ron and Hermione would be a good couple. I know they like each other in the books I've read. Its just a matter of time before they get together.
I have only got to the 100th page of the fifth book, so i dont know yet who is together as of now, but I think that Ron and Hermonie will end up together, though Harry and Hermionie would be a cuter couple!
Wait.. you are only on book 5? wow.. better hurry up. Though for you, I guess you won't have to wait for book 6, which is good. Actually, take your time. Maybe you can pace yourself so that once you finish book 6, book 7 will be out.
I wouldn't go so far as to call myself a shipper for anything, [spoiler removed]I'm not a fan of Harry/Hermione getting together. I think they work much better as friends who care for each other.
-EDIT-
I fail to see how that was a spoiler considering it's a voting option.. Like, whatever.
I will forever and ever be a Harry/Ginny supporter. And I love R/H together too...but there's something about H/G that I love reading how they interact, similarities, etc.
I'm afraid I've already gone back to H/G fanfic, now that I've finished the 6th book already!
i'd have to say R/H cuz they'd be really cute together and they're always fighting. Also, when i was reading the 5th book Rowling mentions R/H by comparing them to Mr. and Mrs. Weasley...it's on page 658 at the bottem.