I'm getting "the one" pretty soon. I would like your opinions on a drilling.

I currently bowl on a medium pattern with less dry boards on the outsides. I like to play down and in. I throw the ball between 13 and 15 mph at the pin deck. I'm a low to medium rev player about 200rpms. I've seen plenty of these balls out there and I want to see what the hype is all about myself.

I want to make the ball have the most backend possible.
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Currently for sale:
X-Factor Vertigo 16lbs, one drill, <50 games.
Triple X-Factor 16lbs, one drill, <50 games
Columbia Wild 16lbs, one drill, <30 games