Hi, good research! I went thru the same process u did, thou my appointed ID was not in your list. My reno has completed about 3 weeks ago, and Im really happy. Everything is about 95% of what I wanted, with the price that I was comfortable with. I always believed that when we work with the arts (ID is an art, especially when u want "ideas"), the designer is just as important as the credentials of his company. How is the designer like? Does he talk flashy, or come out with ideas that spell $$$? Does he hardsell, or will he change his ideas based on your requirement? If your ID drives a expensive car, wear luxury watches decked in branded clothes from top to bottom, I believe he will not give u ideas that are value for money. Instead, he will be recommending you best of the best stuff at a ultra premium price, whether the idea fits your design or not. If you are on a budget (I cannot understand how 31k to 120k just for renovation is considered budget, but Im assuming your home should be a terrace or semi-D, FYI I spent 18k on reno, 2k for electrical works, about 10k for fittings, home electricals, beds, lightings and consumables such as cooking spices and daily necessities to fill the fridge up for my 4-room bto), do make sure that your ID is someone who can see the importance of money and a budget. The meeting place to hold a meeting, the type of food he orders, the drinks he orders, conversations that he hold over a phone call, accessories for himself, accessories he uses for his car: all these little things will tell u alot about that person. You should be looking for a person who is honest, careful with money, thinks with logic and arts - not just ideas without the care for cost, and most importantly, humble and listens well. The right ID for a friend might not be a right ID for you. Hope you choose your ID wisely and enjoy your reno!