Well I don't know too much about JR servos but if thats what they recommend and the specs seem fine I'd go with it. If it gives you the power it says on the box then try it out.

Why do all servo manufactuers have one good thing that others don't? I really like those karbonite gears that Hitec make, they'd be really great in a 3010. Why don't Futaba copy them and use em in a 3010? Metal ones are ok but they are heavy and you only get them way higher up. The karbonite gears come with the low range Hitecs. That's what I like. You don't have to spend £60 to get quality gears.