Any opinion of Frentubo oil cooler hoses?

[J.P.]

I wanna replace the rusty stock pipes to my oil cooler. Found these at Motowheels, in CF, kevlar, and stainless. About $210 and up.
Anyone have any experiences? Rust resistence? I live near the beach so it's a concern. The stockers quickly turned to crud.
Why would someone choose kevlar over stainless- weight?