I've smoked a #3 6 1/2 x 54. The original line, not their recent stronger new release.
It was actually very good. Mild to medium, yet rich and full of flavors. Round and very smooth. I liked it. But if you like strong cigars, it would not be for you. If you like high quality mild to medium cigars like Davidoffs, you may love this one.
Anyway, I think DCs are way too expensive and have not much chance to smoke them.
I've had the #7, which is a torpedo. I'll agree with Lamar that they're a bit on the mild side. But, when you want a mild cigar, I've been impressed with the consistency of the Diamond Crown line. They are definitely a bit pricey, though.