Singnet - if use 3rd party products and configure correctly,
it's stable and fast.
Starhub - if you stay in an area where there aren't many people
subscribed to Starhub, it's fast and stable. My cousins use Starhub
and live around those areas, and they always boast how much faster.
Only make me jealous nia. 
Pacnet - technology used is the same as Singnet, stable and fast.
But price a tad higher.
