I subscribed to Whizcomm when I moved out of my parents' place this year.
The reason I chose Whizcomm was that it was the cheapest no-frills 1Gbps plan available. They don't charge activation fee, and have free delivery and installation on off-peak time slots (weekdays, working hours). So if you have someone staying home this might work for you. I had to pay extra for a weekend installation because both my wife and I work.
Unfortunately, you don't get a free router at this price, but luckily we had an extra from our old homes. You can always pay for one though. You also have to pay a deposit.
Ease of signing up: 5/5
Just fill up an online form and everything's settled. You don't even pay upfront. Compared to other telcos such as MyRepublic this process was a lot easier.
Customer service: 3/5
Whizcomm really falls short here. Firstly, their engineers who installed the internet were very junior and seemed quite unsure about their technical stuff. Not very confidence-inspiring.
Secondly, it is not very easy to get information from them. I was not given an invoice for my first bill, and was not given any information on when I would be billed. They also took 2 days to get back to my email enquiry. It's a far cry from services provided by telcos such as Circleslife, where you can get all the information you need via the app.
Internet connectivity and speed: 4/5
The optical network terminal (modem) provided free by them is not very reliable. Sometimes it doesn't connect to the internet and I have to reset it by turning the plug off and on again (it has no off and on switch on the device itself). Quite troublesome.
Internet speed is reliable when it does work though, and doesn't drop suddenly.
Overall score: 4/5
Pretty good, more or less happy with them, but not perfect.