which brand of reishi mushroom is everyone taking?

is swanson resihi ok? or whats the differnce between reishi and red reishi?

i'm in th euk and cant find what AA to take

I take this from Amazon, I take 2 a day:

Nutricost
Organic Reishi Mushroom Capsules 1500mg, 60 Servings - Certified CCOF
Organic, Vegetarian, Gluten Free, 750mg Per Capsule, 120 Capsules