Of all of the Inferos the Intense was recommended for me as well since my ball speed is only in the 14-15 mph range. It's higher RG will help you project it down the lane before it's nasty backend comes into play. I would think the Classic Zone would be useful for a slower ball speed as well, but my driller has told me to stay away from it for whatever reasons.
Power Groove = expensive plastic? Only if you can get plastic to check up when you push it into the burned up track in the third game of league. I thought this ball would be good for later in the night, but it's rather strong for $100 out the door at most shops. I have a Chrome/Yellow and think I'd be happier with the more recent and milder Purple/Silver.
--------------------
Everyone is entitled to be stupid but you're abusing the privilege.