One of my fave wantan noodle noodle places to go to is Restoran Gao Lao Hwa Nanyang Chicken Rice in Setapak.
The noodles are fairly decent but their char siew is really nice especially with the cuts with both fat and lean meat.
The one in the pic here didn't have as much fat so make sure mention to their staff upon order if you like a good ratio of meat to fat.
The best thing about their wantan noodles are non other then their wantans. You get 2 wantans per portion which are larger wantans then regular everyday hawker stalls. What's special about their wantans is that every wantan has a prawn in it. Not sure whether it's half a prawn but the presence of the prawn is definitely there together with the nicely seasoned pork mince.
Every bite of the wantan just burst with juiciness from the prawns and pork. Super delicious and definitely a craving I have every now and then.