"But being as this is a .44 Magnum, the most powerful handgun in the world, and would blow your head clean off, you've got to ask yourself one question: Do I feel lucky? Well, do ya, punk?" If I had to bet, I'd bet a buff will come on the IS-7 sometime... but I've read nothing of such a buff yet. It may not fit their business model to upgrade older tanks continually as opposed to always offering some latest/greatest, but then they've already buffed the E-100 (although it is newer than the IS-7, too). One way or another it will probably be the same price buffed as it is now... so why not just wait? IIRC the IS-7 doesn't have any bigger gun to research once you get it, does it? At least old tier tens had nothing more to research once you got them, but they may have changed that to be more like the newer ones that have researchable better guns.