There seems to be nothing out of order in that screenshot you've uploaded.
Reallocated sector count indicates corrupted/damaged clusters on a hard drive but it is normal in above picture. It is at 200 now; alarm bells should ring if it rapidly descends from this count towards its threshold of 140.
Mine is a Seagate 1 TB drive and the no. bad clusters are increasing at a steady rate and the count will soon go below the threshold mark. And yes, I was cautioned by the disk utility I use (CrystalDiskInfo) about the rising bad sector count.
Bad sectors counts are very low and it may take over years when this drive start freezing or completely crashed. I'll better recommend you to stick with this till your RMA warranty is about to expire. Order another drive before the warranty get expired to get another drive.
On the other side, I'll recommend you using Seagate sea tools to look more closely about the current hard drive health status and make sure everything is up to the mark and may work properly.
Seatools seems to be a mixed bag. One of my hard drives is shown as passing most of the tests that Seatools carries and yet the reallocated sector count in the SMART readings is showing an alarming increase.
@Live4speed, your drive developing a bad sector or two is not exactly akin to impending drive failure. Your hard drive has some spare/empty sectors that it uses when certain sectors go bad. Only when the bad sector count increases rapidly do you need to worry about RMAing your drive. As I said, most of your readings look normal to me.
That said, it is imperative that you have a working/usable 1:1 copy/backup of all your important data all the time.
How much warranty does your drive have remaining? If only a short period then go ahead and RMA it. If not, I'll advise to hold on and observe the bad sector count for some more time. Hard drives can motor on for years with a few bad sectors!