rui song (u better like ter kua)
25 (they do sell bcm)
58 (best ter kua i ever had in a bcm, all 2 slivers of the stuff..)
fan ji (nicer noodles)
Macpherson

(related genre. fishballs. or meat ball noodles)
ru ji
hong xing (erh, maybe stick to bukit merah view branch)

what i disagree with..
tai wah(the fake branches;i never ate at Crawford lane b4)
the traditional teo chew thing at havelock
the ah hua at pandan gardens
the one at teban gardens (BUT i bet its the cheapest fishball noodle on the island! $2.50 serving still available!)
and yes. thye hong at ghim moh. elder brother of ruji kitchen i think. the only similarities are the queue and theres fishballs involved. the sweet fishcake is interesting but its a totally different product. maybe how fishball noodles was originally. not related to bcm really.