Dexter looks like he's carved out of granite.
Over the last three years he has made consistent gains and kept his symmetry.
No one has a midsection like his and quads/hams/calves are always full and shredded. I think he may be reaching the limit for mass though. In any case, he should be number 2 at the Olympia IMO.
Although, I haven't seen him pose. This can make a big difference in the top 5 rankings.
Lee Priest would be the second in this category, aside from last year. I don't think he got his color right and didn't look as hard as past years. None-the-less, his achievements to date are remarkable. More times than not, these have gone without reward.