There's nothing wrong with shooting mechs -- out of a well-tuned bow. But the reason for shooting them shouldn't be to cover up poor tuning. I've killed nearly 30 deer with mechs, but it was because I wanted the devastating wound channel I could obtain with them. I also always shot them out of a perfectly tuned bow.

Follow what the others have already recommended, and right-click and save Easton's tuning guide to your hard drive. Once you get your setup tuned properly, I assure you you'll enter the woods with a level of confidence in your bow and ability that simply wasn't there before -- irrespective of whether you ultimately end up choosing a fixed-blade head or a mechanical.