Stop tying price with performance.
E.g. longevity of Noctua's fans is legendary. I haven't had opportunity to try new Thermalrights, but looking how cheap they sell dual towers with two fans, I would be surprised if their craftmanship wasn't bottom of the barrel
Pretty common are complaints about coming with SE coolers fans starting to rattle after not long, few weeks or month what fits my suspicion well.
Other thing you pay for when going Noctua is their customer service. Renowned and supporting almost all coolers they've ever made with kits for new sockets. TR does kits too, but I would like to know how it works in practice. They're for sale online, but from what I've seen pretty expensive when Noctua's is known for sending them for free at least during six-year warranty.
BTW these are two reasons why even most expensive Noctuas happen to be the cheapest in the long run :]