Super Jet turn nozzle

Im putting a c.a.t.s system on my sn sj and was wondering if there would be any performance difference in getting a protec +20mm nozzle or a +50mm nozzle? what good is an extended nozzle vs regular?
 
ok thanks guys i'll see how my stock one holds up Its been sitting in the sun for about 10 years so it might not last long. so if it breaks i'll try the protec
 
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