You will be surprised to know that the current ACU worn by the US ARMY is pretty low on the popularity list. The whole concept was to design one camou pattern that can be used in nearly every terrain but of course that doesn't work in real life. The Marines, on the other hand, has the MARPAT for terrain that is greener (used in eastern Afghanistan) and the desert camou, well, for the desert (used in southern Afghanistan).
The current body armour is not very popular, very restrictive in body movement, and heavy as h*ll. A new version is being tested now and it's far lighter and less restrictive. I actually like that a lot! However, if you add your basic ammo load, 3L camelbak, IFAK (Individual First Aid Kit), radio, grenades, a couple pouches of misc items, then even the lightest vest will be heavy. There is no way you can reduce weight unless you ditch the ceramic plates! The US military has distinct advantages over the SAF: they have the $ for R&D and they get a lot of feedback from troops in actual combat. The SAF may have some of the $ but definitely no combat experience.
Someone mentioned the ceramic plates. I don't what they use in the SAF now (cos when I was in the NS in the mid 80s we didn't use any body armour) but the current US Army plates are meant to stop X numbers (don't remember exact figure) of direct hits from AP 7.62mm rounds before cracking and penetrating. This means that they will stop 5.56 without any problems but I'm sure there is a breaking point with that too. Body armour are classed as Level 3 (for stopping fragmentations and 9mm rounds) using only kelvar panels and Level 4 (for stopping AP 7.62mm rounds) all ceramic plates. So combat body armour are usually designed with a kelvar insert (to stop fragmentations) under a ceramic plate. As such I believe most, if not all, ceramic plates are designed equally whether it is US or Singapore.
Anybody worn the SAF body armour yet? Are these the standard issue to all SAF soldiers?