They have only been out for 3 years or so. IBO speed is 319. They are suppose to have all of the Mathews quality at about half the price. If you can get a good deal on one, I would give it a whirl. They were about $450 when they came out.
I've got the eliminator II. Bought it new 2 years ago. When I was researching before buying mine, I read a lot of reviews of the eliminator and they were all really good.