He turned 29 during his second half revival. He's established who he is over the course of his career, as you state. He had an OPS+ of 81 this year, compared to his career average of 86, and 2005 of 84. He peaked at 26, like most players, with a 107. There's a chance some time in the next 3-4 years he will get back to that level for one season, but it's not a safe bet that he will in any particular year. On the list of most similar players, the most prominent name is Willie Wilson. Murton was at 103 this year, 111 for his career. The list of most similar players at this age are Kirk Gibson and Bobby Abreu.