I only know about the infant program cuz that's all I'm looking at.  The Spectrum Montessori one is way more affordable.  The price is ~$1350.  The Leport Spectrum is something like $1600 and going up to $1800 in Sept.  crazy expensive. They both have long wait lists, but we won't need it until Feb next year.  I met the infant teachers at the Spectrum one and they are really nice and caring.  Feels like a warm place very different vibe than Leport.