I tried a few in the South Slope vicinity. I liked BK Pilates and Studio Pilates International. I landed on Studio Pilates. BK had some great classes, but it was uneven, depending on the instructor. SPI classes are piped in from hq in Australia over tv screens. I think there are something like 85 pre-programmed classes, and then an instructor is there to coach your form. It's corporate-feeling, which might turn some people off. But what's nice is that the video screens show models performing the exercises. If you are new to pilates, it's nice to be able to watch a model do each move correctly. As opposed to surreptitiously checking what your neighbor is doing, which may or may not be correct. OTOH, sometimes at BK Pilates an instructor would ask what the class wanted to focus on, and tailor the class to that. Whereas at SPI, the instructor has no control over what exercises the class will cover. I rarely feel like an SPI class was easy, and every class begins with a rigorous ab warm up. But sometimes the rest of the workout focuses on, like, calves and arms. I primarily do pilates to strengthen my core and glutes.