I flew from IAH<->LIM and sometimes you can get into the Polaris Business class at 35K miles business saver award ticket.
which is a good deal compare to the USD$3500 ticket price.

that 767-300 is relatively good seat as a Polaris Business class, it's fully flat and Saks fifth avenue duvet, also with amenity kit.
also 2 meals provided, one is the normal lunch/dinner meal, another is light fruit meal prior arrival.