I would get the better servos now while you can and use them. No you won't notice any difference now but on your next plane you sure could. Over the years I have been buying the best servos I could find on sale and using my standards for things like throttle or in smaller planes. Always get the best you can when A deal comes up. I have A nice 120 size Kaos out in the shop and have everything to put it back in the air except servos because all I have left out there are standards and they just aren't strong enough. Everything else is being used in planes I still like to fly.
Sure wish I had more servos or some money to buy some more.[&o]