Yes SingTel 1Gbps at S$44.9 is not the best price (I am paying this price myself, just upgraded in September) but if you get the other perks with SingTel TV and even SingTel Mobile (SingTel Circle), then it may be a good value as a package.
SingTel Circle benefits are pretty good.
https://www.singtel.com/personal/pro...singtel-circle
As for M1, yes I hear good words about them. For my secondary Fiber internet access (StarHub 500Mbps, do not want to put into one basket cause already too much in SingTel), I can consider to switch to M1 in the future, just renewed contract with StarHub at S$29.9 which seems to be a mistake— should wait for offers as I am out of contract for one 1.5 years+ and I did not get any freebies or promotions this time.
As for non-big-three, I don’t think I will consider them any time soon. Even StarHub is cutting people and M1 was originally to be sold (later the major shareholders changed the mind), not so sure how they can survive in the long run. If they do not get the profit, then the service level will go down spirals.
Actually same for those mobile MUVOs, I was using Virgin Mobile prepaid last time (bought Nokia 8250 from them, it is a joint venture with SingTel). Later it went bust...