If you're just running Furuza (katana) I'm loosely assuming that you're cutting? If so, creatine might not be that wise of an option, as the appearance of your cut would be diminished by adding water bloat to your muscles.
Creatine will help maintain the size made whilst on cycle and thus is generally reserved for PCT. Again, it's all up to what you prefer. Creatine in a non-stim format is recommended if it is to be taken while on cycle, as the addition of caffeine or stims can raise an already elevated cycle. Again, it's all preference, but be sure to monitor BP if you plan to take creatine with a stim in it on cycle.
As for brand, I prefer to just use *** Creatine Monohydrate, as it's cost effective and you know exactly what you're getting, not some vague proprietary blend.