The standard servos that come with either radio are fine for this model. I fly a JR 9 CH 2.4 but either radio you mention is fine, since evidently you're in the market for a new radio I would advise a 7 channel over a 6, both Futaba and JR/Spektrum offer good choices if you can swing the price difference. Down the road you'll appreciate the additional capabilities in a 7 Channel vs a 6., my 2 cents.

It's great airplane, flew one for several years with an OS 50SX and a Saito 82. The Saito was more fun, but the OS was very good...which OS are you interested in? An FX or AX series would be excellent, if you're looking into an LA 46 I would recommend something else, perhaps a Thunder Tiger Pro 46.