Lexar for me but i wouldn't have any issue buying Sandisk.
Be careful where you buy from though, there are loads of fakes out there.
General consensus is if you buy from Amazon, make sure the order is fulfilled by Amazon and not a random seller from the marketplace. If you're buying from Ebay then good luck
Not just fulfilled but sold entirely by Amazon! "Fulfilled by" just means that it's a third-party company but Amazon are holding stock for them and using their network to deliver it. You can easily get a fake via such sellers.
Sandisk and Samsung here, Samsung have very good build quality.