Since this is a thread about ST, I thought I should share what I thought about developments like ST and similar like NI, HH (not price). Those large developments like ST, SEG, HH, etc, the feeling I get is that you have a large compound that is being fenced up. You get in through one main gate (so far can get in without being checked in HH), so you feel like you are going home to a HUGE compound and a place that is out of bounds to the public, and then there are smaller individual security gates within the compound which can give you the added feeling of security because there is another layer of fencing and gate. Depending on each development, if the general consensus within the community is that it is safe, then you see more people hanging out in the common areas like garden, children's playground, jogging etc. If that is what you like, then you should choose a development that is already completed (like ST, HH, NI selected precints) and get a feel on the ground (new developments you wont know until people move in).
I did not have a long checklist (convenience, good location were my only tangible criteria) when I selected my unit, so alot of things were based on emotions (I have a very high feel good factor about my place, especially after I went through the muddy construction road leading to my unit and realised that its a unit that is on higher ground within the development; this is if you believe in fengshui).
One forumer Cathy said that you know when a house is meant for you when you feel it. I really believe it because so far the places I have lived in before all have that feel good factor and I thoroughly enjoyed them. Go with how you feel if you plan to live in it and it wont go wrong