I can't believe no one has reviewed this place yet! Some of the classes do get quite busy (with good reason -- they have a central location and offer a scorchin' $39.95 introductory month offer), but even at capacity you never feel like you're crammed in like some other more overpriced studios *cough* Bodhi Tree *ahem*. I signed up for the registered intro class for $89, which runs four Saturdays and includes unlimited clases as well.
The studio is beautiful, the changerooms are equipped with luxurious rainfall showers, and the hot classes are heated by radiant heaters on the ceiling (according to the website, they're the only studio in town with this heating system).
I've had classes with three of the instructors (Dawn, Natasha and Kate) and they've all been excellent. They are all very willing to help you with your positions (especially useful for a beginner like myself), making even the more challenging Sattva or Asthanga classes less intimidating.
I've been to a number of different studios, but Santosha takes the cake!