Well I dont know about what all styles are welcome here but the style I have taken  are as follows Ninjitsu-Ryu , brazilian juijitsu , Okinawin Shorin-Ryu , and in my own taste I think they have all brought alot to the table but as Far as something I would like to train in would Definetly be XMA but sadly for me my back has started to cause me problems and when I do fancy kicks even it starts to kill me so I can not try it without putting myself in pain :( . But I do think its a really flashy and entertaining program. And I hope to keep seeing more on it..Just like Chat says though and I quote Flash is trash without the basics..And I strongly agree on that alot of these kids and people are going out and without doing any martial arts learning the XMA and I just think its gonna hurt them in the long run :) but thats just me ..You all have a fun time and rember Martial Arts is supposed to be fun :)