Is St-I worth it?

eekeeboo: IS4 will always hold a special place in my heart and the KV4 is a lot of fun. If you can learn to angle (as mentioned above by cobra) you will be amazed at just how much you can tank from even higher tier tanks. And this includes not just corner angling but in the open getting caught with your tracks down, just angle and wiggle and life will be great.    STI I never got to play much but it's quite handy for damage block missions as it's able to do the job quite well!