I am getting hardware together for a 28% extra 330, and would like an opinion on some servo's.

Would one 9252 be enough for an aileron on a 28% extra?

Dimensions: 1.79" x 0.90" x 1.04"
Output Torque: 91.6 oz./inch
Transit time: 0.14 sec./60 degrees
Weight: 1.75 oz.

This is at 4.8 and they are not recommended for 6.0

Would there be any reason not to use a 9450 servo that is listed for car and boat use on an aircaft?

Speed: .10 Sec/60 Degrees (at 6.0 Volts)
Torque: 111 oz/in (8.0 kg-cm) (at 6.0 Volts)
Weight: 1.94 oz (55 g)
Length: 1.59" (40.5mm)
Width: 0.79" (20mm)
Height: 1.48" (37.5mm)