Condo in central area for $1700 a month? Where?
Plenty of places, I work on Science Park 1, there's also Science Park 2 (plus it's extension).
There are shuttle busses, but they mainly go to the MRT and the NUS Campus. I personally catch a taxi in otherwise I have to walk about 1/2 km in the morning and get all sweaty, I do bus back though...well, tonight, I'm jogging, but you know what I mean!!
I live just off Dover Road, there's two condos there, Heritage View and Dover Park View. Both have good facilities, and are approx 2000/month for 2+1 bedroom appartment.
There's the other places nearby as mentioned by others, Pasir Panjang is good but ask if they have cable in whatever condo you go to, West Coast Road is a little furhter, Clementi is towards the north past Dover Road and Holland Village is up there to.
Now it depends what you want. But only you can tell us that!!