well the spring itself is very good (although we have seen up to 10% in spring rate difference in those).
you won't have any progressive damping, it'll be very linear, as they don't even have baby springs...as for the H&R on the Talon I have many customer with those, all very pleased. And Sprint is a brand that you have to stay away from.....I don't say that often, buts its real $hit!!