We had a pleasant dining experience at Ramen Keisuke Tonkotsu King Niku King.
Prices are not extravagant, and you do get more than a fair amount of decent food.
We tried all three styles with flavoured egg and added additional S$1.00 per portion for spicy paste for the Miso Ramen.
Chicken Run has two seating areas, one inside and another outside the restaurant. There are plenty of tables so queues that form during lunch subside rather quickly.