I hit my first ace with a z xpress then hung it on the wall. When i went to replace it i bought an xs instead and at least one xs has been in my bag since. I got a z xpress as a make a trade even disc about a month ago and started throwing it when i lost a cyclone that i had used for years as a turnover disc. The xpress was more stable and has been flying dead nuts straight at about 80% power. The one thing I have noticed is that it lacks some glide which is good fit for my bag so it doesn't over lap with my xs to much as i use them at different levels. I know it is old school but so am I.
Sole, Summit, ridge, vp, ibex, obex, trak, ascent, unlace, lace, olace, solace,
i have seen monkey sh!t fights at the zoo more orginized then this.