I haven't thrown a bunch of Ebonite balls but a good many and to me one of the best balls I've ever used was the Overtime. I had it polished and only drilled 5x5 and it was the most versatile ball I think I ever owned. I still have it, however it was before I had to do a mandatory grip change as I had to have my middle finger shortened by almost a 1/4 inch. I can't throw my old balls now due to previous injuries...at least for long periods of time without pain like I used to. I plan on either getting the middle hole plugged and redrilled...even though this ball has already had the fingers plugged once as I got it off ebay and it has a ton of games. Already had it resurfaced a couple of times and had to get some chips in the ball fixed. Also has a switch grip in it which I thought I liked but I don't care for them anymore.
I was thinking of trying to find a NIB one, or maybe someone can think of a ball that is similar. I was interested in the Playmaker which most may say is not really like the Overtime but it sure looks strong and versatile like the Overtime.
Also, what was the difference between the Overtime and the Gametime? I saw a Gametime NIB on eBay and was wondering. I originally got the Overtime after I saw a stroker in league shoot a 300 and Tommy Jones at the Tulsa tournament in 05 nearly shooting a perfect game