I personally think that the last 2, for the cost of swapping them wouldn't really make that much difference to the car.
I like the 1st one. But if you are changing wheels it would be a good idea to get 16's if you already have 15's. You could have 17's but a few people have said they feel rough. It depends how you want the car to feel.
I swapped to 16's and found a big difference, my car feels a lot safer with wider wheels too.
I like the look of these myself...
heres the link because the photo is too big,.
http://www.uk-mkivs.net/forum/topic.asp?TOPIC_ID=11385
But again, just my opinion! not to take too seriously.
James.