For now onform Ronaldo7 will be the best. But in the future hard to predict.

Nani was snapped up by SAF as a long term replacement for Giggs. But Nani can play on both wings, so it won't be a big problem as Park can also play on either wings. Speaking of wingers, MU needs another winger in case CR pulls of an Eduardo. I really hope such accidents won't happen again.

Well, I think Messi and van der Vaart can challenge CR on the wings. In terms of scoring, I cannot think of anyone else. Messi maybe. He's been scoring in most of Barca's games until he got injured. Walcott is a good winger, no chance he can compete with CR in terms of scoring. Other good wingers I can think of are Downing of Middlesbrough , Bentley from Blackburn , Ashley Young from Aston Villa, Aiden McGeady of Celtic, Ricardo Quaresma from Porto and Hatem Ben Arfa from Lyon. Those are the ones to watch in these few years.

wahh you really have thought about possible replacement for ronaldo? wish that ronnie plays with man utd forever

haha i think this guys can challenge CR7 hahha~shaolin soccer

http://www.youtube.com/watch?v=YWFpPST94wU

Maybe the topic should change abit like who can challenge CR in winger position in EPL or EPL, Laliga and Series A. Serious, same like you, at this moment I only see he is currently the best in EPL. But for Laliga and Series A, sorry I can't give much comment bcoz I don't really watch the game. So I hope ppl don't just get away, hey he is da best, or hey some one is better, but yet just watch a youtube clip.
Maybe some of you did follow most of the league and sum up he is da best, thats is only correct. But just follow few teams in EPL and sum up he is da best is kinda of rookie in following football.

Nani can be further develop by SAF like what he did for CR7....

Messi
Similar playing style like to Ronaldo and have good close control of the ball. Usually play further than Ronald because of his role in Barca with the 3 forwards up front. Occupies either the right or the left side of the 3 forwards. Possible comparison between him with Ronaldo.

Van Der Vaart
It is an attacking midfielder. Predominantly plays behind the forward and link up plays from midfield and attack. So can't compare his style of play to Ronaldo. As both players play in different position for their respective clubs.

Downing
It is a consistent performer for a mid-table club. Have a decent left foot and quite consistent with his dead ball delivery however thinks too highly on himself after his selection for England. Still need to work on his dribbling skills and technique.

Bentley
Consistent player with good ball delivery and have some good skills in him. Has some aggression in his play to add more bite in his play. Would need to play a big club in order to get selected more often for his country.

Ashley Young
Potential player with bangs of skill and more importantly have pace in his style of play. Quite good with his set piece delivery. Would need more time before establish as a good play. The main issue in his game is consistency.

Quaresma
A player with too much trick in his sleeves. Would need to cut his trick and be more decisive in his final ball delivery. Up to now he hasn't learn much although he and Ronaldo is around the same age.

The only player that could be in the same category as Ronaldo would have to be Messi. But too often this season he has been injured far too often. Unless he keep himself fit then he would definitely would run close to Ronaldo as the best winger in the world.