Best Baseball Player of all Time

[Gordogg]

I'm a 3 sports nut, NFL, MLB and NBA. I used to follow these sports closely back in the early to late 90's when I collected ball cards. I've learned and retained tons of info such as stats, records and all time greats of these respective games. I was even remotely interested in the NHL, and still am for the fact that video game hockey is one of the funnest sports games to play.

So who's the best ever in your opinion and why? I'm looking for arguments based on stats and ability here rather than persona and image.