New or used? You have a 60cc saw now I’d go for a 70cc to 75cc saw next. Anything in the 70cc to 75cc range is a big jump from 60cc. These bigger saws kick butt. If a used saw is considered I look at a husky 570xp. She I look at pics of used saws the really clean ones were probably pawned or for sale by homeowners. There still new with good compression.