Seachem test kits

Hi, can someone give me a quick answer on whether or not the Seachem Test
Kits are reliable for freshwater? I need a phosphate test kit and the
Seachem is quite a bit cheaper than the LaMotte. I can order one from my
local store if I put in a request by tomorrow but I'd rather spring for the
LaMotte than get a test kit that isn't accuarate. How about the iron test

in Vancouver