Personally, I wouldn't consider that bike "Low End" when I think of low end, I think stem shifters, and turkey levers and heavy cottered cranks. Your bike has none of those, it may lack the modern tech, but you should research more affordable upgrades, like maybe get a cassette/freewheel suited for hills? newer tires are a cheaper option too, i think you did well with that bianchi and i would love to have one like it. make sure you know why you don't like riding it.. is it too big or small? there may be things that your passing off as old but really it doesn't fit well. jut my 2 cents..