This is really the only official yoga studio I've ever trained at, so I don't really have the luxury of comparison here, but I can tell you that HOT YOGA is definitely worth it. I find cold-stretching to be uncomfortable at best, painful at worst. At Sumits Yoga, the temperature is HOT so you don't have to worry about cold stretching-incurred injuries. Breathing is sometimes a challenge because of the temperature, but if you maintain a meditative, zenlike calmness, you'll be okay, & you'll find it actually clears the lungs & sinuses so you end up breathing better. An awesome experience!