(Author, here.) I also recommend garyburd/redigo. I especially like the API. Instead of adding methods for every Redis command, redigo uses a single Do() method and then has several "type helper" methods that allow you to convert the response to various types simply by wrapping Do():

    value, err := redis.String(client.Do("GET", "mykey"))

Of course, this means you need to know about every command's response type and adds an extra (if small) level of verbosity, but in practice it fits very well with Go's philosophy of handling errors often and early. So, for instance, you're encouraged to handle the possibility that your key doesn't exist rather than barreling ahead with an empty string.