I could use a bit of advice here. I ran several 5K races in the Brooks Ghost 8 last fall. I enjoyed the ride in them and certainly want to keep them as my everyday trainer. But, I'm looking to add a shoe for mostly just racing only. I don't think I'm interested in a flat at this point and still want something with a little more substance to it. Perhaps something that's a bit lighter and a little more responsive and springy than the Ghost. Just from research and reviews, the Nike Pegasus, Brooks Launch and Mizuno Wave Rider appear to be possible alternatives. Can anyone provide their input on experience with any of those shoes and if they may fit the experience I'm looking for? Any other brands or models that you can recommend would be greatly appreciated as well! :)