I don't live in Singapore, so can't advise any studio in particular, but I can maybe give you some advice about studios.
Make sure you can play in time to a click track (metronome). This will save you a LOT of money.
I used to do some session work, and one of the session guys I worked with got shouted in to do a guitar part (PS when at the pro level you are expected to play a piece perfectly at first sight
it's tricky). OK, so he got shouted in, and made a mistake - one tiny mistake - and he got fired. He hasn't done session work since.
The reason being that we were in Abbey Road studios, and the studio hire costs about £2000 an hour (about 5500 Singapore dollars) - him making a mistake on a piece that lasted about 2 minutes meant 2 minutes had been wasted - and at £2000 an hour, 2 minutes is a lot of money.
So - my point is - make sure all the band can play in time with a metronome. This will save you making mutiple takes of a track - which is when the costs begin to mount.
Studio editing can correct tempo alterations, but studio editing usually takes longer than the actual recording itself. So it is best to be so tight that any take will be good.
You would probably be better off recording using your computer, and some computer software - why don't you do this? This way, there isn't the pressure of time.
I do that when recording classical guitar - I use a Neumann mic, run through an Alesis IO2 through Cubase on my computer, and it does the job fine.
It depends on what you are recording, though.
But you should have a think about your options before booking a studio.
PS don't think i'm trying to put you off going to a studio - i'm just making you aware of some of the issues. If you are in a band, and one of the band members drifts out of time every now and then, this can cause major problems within the band.
So, to summarise - #1 priority - playing in time.