Upload & Sell: On
I will agree with Lars that Transcend makes great cards. They have a range of capacities and speeds to choose from, so you can make your selection based on the type of shooting you will be doing. If you're on a budget, they're inexpensive enough to have a few high capacity but slower cards for when you don't need the 1000x speed, and also keep a couple smaller capacity, faster cards for when you want maximum throughput.
That said, I'm currently using Lexar 1000x and I love them.