"Sending a lot of data" seems to be the status quo with many internet users. It's quite common for me to receive 10-20MB email attachments, or ask associates to upload even larger files to our file server, or do anything else that will quickly saturate bandwidth.Unless you're sending a lot of data, there shouldn't be much in the way of Q0S issues.
It's the other direction that QoS affects. Your router cannot give any priority to incoming data, only outgoing. The most it can do is slow things down a bit, by delaying the acks. QoS on your router affects data leaving your network.It's quite common for me to receive 10-20MB email attachments