I have both the Sonic X solid and the Slayr. Yesterday I did extensive testing on torched lanes. The Sonic is drilled with the pin 6 inches from my axis with a small hole on my axis. The Slayr is drilled with the pin 5 inches from my axis with a decent sized balance hole. The cg is kicked way right on both balls. My thoughts were the following. Sonic X gets 2-3 feet more length due to the drilling and this allows me to play much straighter put if I get to fast with the speed I left a lot of weak tens. If I moved in with my feet (feet on 25) and kept the same target (10) and slow looped it the ball was great. As long as I got it to 10. If I got to slow this ball really bounced and was either a split or a crossover. Pocket carry percentage was great, but if I neglected my speed (too fast or slow) strikes were few and far between.
With the Slayr I was able to move much deeper standing 35-40 and swinging the entire lane (30 to
with awesome recovery and even better hit. The Slayr goes a little earlier than the Sonic X but the hit on the Slayr is far superior. The Slayr has more backend and better hit but was less controllable for me for the simple fact that when the lanes are dry I would like to play straight and the Sonic X let me do that. Hope this helps.