At the end of the day it's is the ratio that matteres the most. Scott ( pylonracer ) is correct that a longer servo arm and an even longer control horn will yield the least amount of play in the linkage however it will show gear wear more. I assume that Scott like myself use good enough servos where gear play is usually not an issue. I just clicked a couple pictures of my latest pattern airplane. While being an older design it has had some updates and flies rock steady. Note that I use relitivly long servo arms but also really long control horns, to the point that if you look closely at the elevator servo, it is mounted on a wedge to keep the pushrod parallel with the servo. On all surfaces the ATV is over 100% and resolution is very good.