I want to replace the G1 that I've been using since 2008. A friend of mine has an MX300 sitting around that he is willing to sell. If you were to make a purchase, would you buy the MX300 or go with the newly released Aurora? What it boils down to is a reliable sensor with prediction vs taking a gamble and hoping I receive an Aurora without problems (based on the feedback from bst's PART 3 post) . Any feedback is greatly appreciated

MX300 = $20 USD, used briefly, but still in its box
Aurora = $45 USD, Amazon

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