?
So are you wanting a 60-70cc saw? New, used?
New I am not sure that your budget will get a saw in that size. Used is another story. You might get a 372 or 440 044 for that on ebay but who knows how much you would have to spend after it showed up. I think more realistically would be ms360, 036, 357 or 257 for pro saws but for you the best fit might be a husky 359, jred 2159, ms310, ms290, ms280. Most of those saws could be had for the price you are looking at used. Other saws are available new though this is probably most of the readily available saws on the used market for your budget. If you are happy with your Husky, a lot of people her are fond of the 359 and say that it responds extremely well to modification if that is in your forseable future.