What's the best diaper bag in market now? Preferably a backpack..

That will depends on your budget. If you are looking at below $40, you can consider this Japanese bagback. Seems like a fad now. Seen some mother carrying using the bigger size bag as their diaper bag. It is very spacious and light for carrying around. I got mine from Q10. It is having sales now. You can refer to attached link: http://www.qoo10.sg/gmkt.inc/Mobile/Goods/Goods.aspx?goodscode=414622953&stcode=77

My friend has the Marc by Marc Jacobs "Nylon Eliz-a-Baby" diaper bag and she loves it. Actually I love it too haha! It's pretty decent in terms of storage and material. But I reckon, this piece is more fashionable than it is functional. There are definitely other brands that are cheaper and more durable out there.

If you has a tight budget, brand 'Simple Dimple' offers diaper bags with affordable price. Cute designs too! Try and search in www.lazada.sg if you are interested :)

I have the Anello backpack! Love it so much, and I've already had 3-4 people come up to me to tell me they love how stylish it looks

I'm using the Anello bag too .. I find it useful :)

Wifey loves the Kate Spade!