I've no experience with the Blaze Custom, but the
Tone Zone is my favorite pickup. Very beefy, with great harmonics and a sensuous vocal quality on lead lines.
I haven't listened to Petrucci with enough frequency to know much about his tone, but I'm sure someone else will be able to help you. I believe he used the Blaze series for a while, at least, so the Blaze Custom might get you close. Don't buy it on my word, though.
Also, what's the guitar/music scene like in Hong Kong?