I've been studying Xing Yi dfor about two years now. Why study a subsystem when the real deal is so much better. There are different branches of xing yi as well. I study Ma, or Muslim Xing Yi. The only Xing Yi practitioner I've faced is my Sifu. His power is a little scary sometimes, but I'm beginning to feel it as well. I have sparred against Karate and Taekwondo people. As long as they keep their distance they do alright, but if allowed to close they're pretty much toast. Xing Yi is an inclose, brutal, no holds barred style and is a little overwhelming if you've never faced it. I've also faced a black belt (karate) that pretty much handed me my *, but in all fairness he's been parcticing MUCH longer than I, and he's got about 30 fights in the ring under his belt. My sifu can beat him, but again, he;s fought competatively, carries black belts in taekwondo and karate, is a teacher of Xing Yi and has studies Bagua, Tai Chi, kickboxing and BJJ. So he's pretty much a badass. As far as trainig goes, I do about an hour everyday. Both standing and line training (xing yi forms are done in straight lines) I spar once a week at least, and work the heavy bag two to three times a week. My sifu lives, eats and breaths martial arts. He's a full time teacher and thats all he does. Trains and teaches. So, you can do one extreme or the other, or something in between.