Hi all, I am looking for some advice. I bought a used Canon Rebel XT about 6 months ago. It is my first DSLR (or SLR for that matter). It came with the original 18-55 non-IS lens. I have been doing a little research and it looks like i could probably get about $75-$80 for my EF-S 18-55mm f/3.5-5.6 II lens. On Amazon, you can buy one of the newer stabilized versions for only slightly more, about $90 used. Would it be worth the small investment for the stabilization? I have noticed quite a few of my shots being blurry due to slow shutter speeds in low light. Would you recommend spending the ~$20 to upgrade to the IS version or just use that money to go towards a new lens (either the 50mm 1.8 or 55-250 IS is next on my list)?