My suggestions (I had to look up the cantonese pronunciations, but I believe they are correct):
『嘉理』(mandarin: jiā lǐ ; cantonese: gā léih)
or
『佳理』(mandarin: jiā lǐ ; cantonese: gāai léih)
嘉 as in excellent; praise
佳 as in fine; beautiful
理 as in reason; logic; truth
Personally, I like 『佳理』 :D
What do ya think?
Let's see what others say...
But whatever you do, don't use 咖哩,because that is the same characters they use for 'curry'. :P