Concerning gameplay, these are 2 drastically different games. If you really love Wind Waker like you say, I would look up the changes they've made and think about if that would interest you to play through it again. You can't really compare these games since they're very different genres, just ask yourself what you're in the mood for, 'A grand adventure - remastered' or 'one-man army action with a Zelda flare'. Which one of these games would provide more variety in your back-catalog.
I literally just bought the HD version and have been enjoying it a lot, it's looking all glossy and new, it's just as puzzle intensive as other 3D Zeldas, not to mentioned it uses the GamePad competently, it has a better overworld than Ocarina of Time, well in my opinion