I thought that you're talking about telco for your phone since this is a telco subforum. If you're talking about Internet, there's:
Internet: Unifi, Maxis, Time, and etc etc

For telco:
Telco(for phone): DiGi, Maxis, Celcom, U Mobile

Generally, using Unifi for both your office and home would be better, Maxis although it is cheaper but it seems to have more issues(each to their own but oh well)

Here's something to read up on for Maxis: https://forum.lowyat.net/MaxisFibre
And for Unifi: https://forum.lowyat.net/topic/3760202/+2200

I'd suggest to get at least Unifi Advance 30(30mbps) for your home, while for your office, I don't know what are your bandwidth requirements so go and take a look yourself here(https://www.tm.com.my/allnewunifi/pages/business.html), since you are from sg with a much faster internet than here