Pardon me but i did some reading up on laminates sometime ago and having problem choosing finally i decided on using one malaysia brand if you wanna know pls pm me i can help you intro.
Btw for Excel laminates you may want to reconsider unless you are gonna use for short term.
From my own opinion these are the few things to take note when getting laminates:
1) Where is the company from?So that support is always there.
2) What type of materials do they use for their laminates.(Take note that singapore weather is very different from the european side)
3) Warranty issues (althought they will change it for you FOC but the time and effort wasted for them to do the changes is a headache)
4) Whether you will be using it for long term(at least 5 yrs and above) or short term(1-2yrs)
5) AC3-AC5 please have a look at this link( http://www.fastfloors.com/article_96/Lamin...-AC-Ratings.htm )
I hope this information help you when choosing laminates.