There are many martial arts clubs in Brisbane teaching martial arts from all around the world. Whether it be a club, academy, PCYC, franchise business or single teacher, many offer good quality teaching. All types of martial arts clubs will have advantages and disadvantages and it is up to you to find a good match with what you are looking for. If you're chasing a black belt you can get them quite quickly in some clubs. If you just want a short course or introduction you can find that as well. Some students are interested in studying a budo (a martial way or philosophy) and you can find clubs offering this as well.
It is important to think about what it is you're interested in and get a close match in the club you choose. Here are some thoughts to help you choose a club:
Choosing a Brisbane Martial Arts Academy - thoughts on choosing a club
Aikido Secrets - Chasing the elusive secret techniques that will make you a bad ass
Martial Arts Lessons - What it means to learn martial arts from a traditional point of view.