I agree with most said above....I prefer Salifert, but use Seachem as well, but some test kits can just be hard to read....Elos is another good test kit brand....Hard to find, more expensive, but accurate as Salifert.
Pinpoint makes good quality Probes. You can spend the extra money and contact Neptune or probably Digital Aquatics and get a lab grade probe if it's super important, but a standard grade probe will work as well.