Welcome to CPF Average Joe. I've seen a few others from Singapore on these forums, hopefully some will chime in as to where to get some nice lights. The brands you mentioned are pretty good, they just happen to not be Zebralight. Hopefully that will change for you all in Singapore.
Yes, I've owned (and still own) Eagletacs, Quarks, Thrunites, Lumintops ITP's and a not a few "budget" lights as well.
Most have been given away as presents, a few I sold away and I now have around a dozen in my possession.
My current most used one is the Scorpion V2, but it's a little too large to carry around in my pocket.