I have one with a 3" pin, and just had it drilled up this last weekend. I went with the pin right on the center grip line (directly below the fingers), and the CG kicked a little to the right with a weight hole in the upper thumb quadrant.
I already have both of the other Uraniums (Solid and Pearl). They're both 1.5" pins, with 1:30 label leverage drills in the center of the grip. Both balls want to set up early and finish with a hard arc.
I figured the Enriched would give me the same heavy early roll pattern, possibly with more backend, but I guessed wrong. This ball reacts more like a Golden Nugget than the other Uraniums -- more length, and the ball just turns hard left when it hits the dry. The very shiny particle/pearl cover seems to override the low-RG diamond core.
It wasn't what I was looking for, but the ball has it's use. For instance, the alley had set up a pair with the National shot, and I was striking consistently standing 24, and playing a tight shot crossing the arrows at 13. When the Enriched hit the dry backend, it didn't seem to overreact and go through the nose -- just a nice controlled transition.
Conversely, on the wet/dry house shot, it was a little more hit and miss. I found the best line was up the boards. The ball was awsome when I hit my speed and release correctly. However, if I tugged and caught too much oil, the ball wouldn't recover; if I hit the dry too early or put too much on it, the ball took off. I think my best use for this ball will be on tournament blocks where things are breaking down, and the best path is tighter up the outside.
I generally don't match up well with any pearl/particle -- because of over/under characteristics -- so it's not fair for me to slam the EU. It probably wasn't the brightest purchase for me to make given my history with this type of cover. I just had so many good experiences with the previous Uraniums, I had to give this one a try.
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"Sometimes, the best move is the one we don't make"