Great explanation there :) I think you could break the high-end gear down even further though…
Right at the top - ARRI Alexa, RED Epic, Sony F65 ($50,000 plus)
More mid-range - Sony F3, RED Scarlet, Canon C300 ($10,000 plus)
Low-end professional - Panasonic AF-100, Sony FS100 (sub $10,000)