i had never trust anything that starts with a Sing in front of it, Vpost use Singpost, you should go take a look at that FB page, almost everyday there's unhappy customer dissing them. thus you cant even arrange the Shipment to be deliver each time slot you want, ends up you Q up and gg collect it at Singpost. want to find out where your parcel is? forget about calling them, their CS are clueless as nuts.
my advice is stick with comgateway, been using them to ship all kinda stuff, Cameras, Clothes, knifes, diving stuff etc, somemore they are using DHL express, their Delivery can be flexible.
DBS or POSB got even free upgrade to express.