I'm also with Mike, he did a great job on my Ibanez RGTCR2 and the friends i've brought there, many of whom have had many years of playing experience, have been impressed by his workmanship, speed, friendliness and pricing. Highly recommended.
I guess its a question of location, i realise that KC is very central, Mike's to the northwest-ish area and Beez is towards the east. I rate these 3 men very highly, and i wld trust my guitar to any of them. To me, they're all of the same calibre. Thus, if i were to pick, i'd probably pick the one closest to my house.
Of course, there's also Malcolm but be ready to spend if you're going to go to him, he's probably the best in Singapore but of course quality comes with a price.