So far the only wtm I would go back again for is this stall.
Bloody far away, long long queue too.
Xing Ji Wanton Mee
137, Tampines Street 11 #01-35 Singapore 521137 Tampines Street 11, Singapore 521137
9822 9773
https://maps.app.goo.gl/9nQVfBtzQcUc1f2A7
Ate it couple of years back.