Hi
We moved to Singapore from Belfast in October. DH is Irish and I am Malaysian.
We have settled in really quickly and very well, despite my initial reservations.
Weather is similar to KL but this time of the year is the rainy season so a bit cooler and less humid.
Food - choice is great and eating out is affordable. Grocery shopping, we can get most of what we would use in the UK at the supermarkets - some very well-stocked expat supermarkets although you will pay for the privilege. M&S is here and stocks soups (tinned), sweets, crisps, chocolates and wine! Meat eg. lamb chops, roasts etc is expensive.
How old are your kids? Lots of expats in Singapore so blonde / ginger kids don't stand out as much as they would in other Asian countries, but have found that people like coming up and touching the younger kids (on head, on face etc)
We live in a condo with facilities (pool, gym, playground), we did consider a house but because DH is traveling a fair bit and we don't have a social circle yet, felt it would be easier for the kids to make friends within condo-setting. I've also met other mums by the pool and at the school my DS goes to.
Schools - International ones - there're quite a few to choose from, Tanglin Trust follows a British curriculum.
Also do a google for Singapore expats and you will find a number of fairly useful sites.
Tax rates are very low and I think we have a pretty good quality of life here atm.