My top 2 are still the Paragon precise and PR Gen 7, but the PR is winning out on a daily basis. While the somewhat slippery back of the Paragon hasn't ever bothered me, it's the all over grip on the PR that does it for me, especially when your hands are dry in the winter. But I especially love how the front is like the the Paragon and has the sloped sides but also the same on the top and bottom.
And I don't seem to have the somewhat flimsy top on my PR. It's nice and tight like the rest of the case.