I will 2nd and 3rd what longrifle and shock said. The guy at the pro shop recommended them to me. He even had them on his Hoyt and there was barely any left on it but he said he shot alot. They may have lasted a month. IMO, they suck and you would be better off with cat whiskers. I have a Pearson Pride with the bow jacks and they seem ok but I still prefer the cat whiskers. My Pride has the offset grip and my Anaconda has one and I really like it. I've never shot a Spoiler but you won't have to worry about quality. Pearsons bows are as good as any out there but they don't advertise as much as others. I've recently read they were going to ramp up the advertising, though, and it looks like their bows are going to go up in price so now's a good time to buy one. Have you actually shot the Spoiler. I would recommend to shoot it and try some others. You might fall in love with it or you might like something else.