I have now been attending YogaPoser since over four months now and have sampled numerous classes: including the Foundations series, the main Yoga poser/Yoga Flow course, Elyza's Yoga Power Hour, James Brown's "Poser Tech" course and the "Reposer" Restoratives course.
Overall I really like the courses and the teachers. I LOVE the fact that we can reserve our spots online in advance. That aspect alone has really enhanced my practice and made me "stick with it" longer than stints at other studios. The teachers are all very friendly and really knowledgeable of the physicality of yoga and always give modifications to make the class work for you, no matter where you're at.
The only thing that I wish was different, but may appeal to others, is the fact that there is music for almost all classes- even the restoratives classes. While for many people that may be a bonus, for me it can sometimes be a distraction and makes it harder to focus. It's not that they have bad music choices, most are really nice, but I personally am not a fan of mixing music and yoga.
Overall if these aspects appeal to you and you want a small intimate studio with wide course offerings, intelligent teachers and an online reservation system, and enjoy pairing your sun salutes with music, then you will really enjoy practicing at YogaPoser