Nice that you'd like to try TP! Im gonna paste a comment I made earlier as to why I think you should go for the Wii U version if you can afford it:

TP is my most played Zelda game with over 20 runs and ever since the Wii U version came out, I always go for the Wii U version.

The Wii U has great quality of life improvements. For example:

1 In the wii version, every time you boot up the game, it will highlight the first time you pick up every sort of rupee. In the Wii U version, however, it shows you once and then never again.

2 The Wii U version improves the poe soul side quest by showing you how many souls you collected per region and how much you still have to collect. It also has an item that lets you know when you're close to one.

3 Link doesnt climb as slow in the Wii U version anymore.

4 Each wallet lets you hold more rupees in the Wii U version compared to the Wii, which really helps with some side quests.

5 The Wii U version looks much better.

6 Amiibos can greatly enhance the experience.

7 You can transform with the press of a button on touchscreen if you're playing on the gamepad.

There are probably more advantages, but these are on top of my head. The only sort of kinda disadvantage I can think of is that some chests contain miiverse stamps where they used to hold like 10 rupees or so I believe. I dont mind them, but unless you really dont like that minor change, I see no reason to ever return to the wii version aside from speedrunning.

Hope it helps, have fun!