There's a whole range of servos available. As you progress you'll learn what you like, and why you like them. My above post is about what I'd put into a plane like you described. There's much stronger and more sophisticated servos of course... and every brand has the "average", "nice", and "OMG" types of servos. Servos are probably at the top of the best investment you can put into your planes... Right up there with radio/engine/battery(s)..

On my giants, I don't hesitate to spend $129 a servo(just bought 6 of them for a project about 3 weeks ago), and I've got servos up to $170 a piece... these are all extreme servos.. none of which you'd need for your plane... but I've been through the size plane you're contemplating, and I've used(still do) the servos I'd mentioned... not every plane needs monster servos, but the fact that you're in favor of decent servos says alot... and there are servos that are perfect for your project,,, take your time and get the best you can.

I suggest study them all, every brand, as there's several brands out these days, many of which I wouldn't hesitate to use. With that said, I'd stay away from cheap chinese pff-brand types often found on Amazon and other sites.. Those are very tempting pricewise, but most of them haven't been tried and tested by mainstream RC companies, which is why they're only seen on Amazon.. don't buy that crap. They'd be fine in for robotic applications, which is what they're geared for, but many/most haven't been used much in model aviation.. which is quite a bit different then Bots.

I'll leave this link here, as it gives alot of specs for hundreds of servos... most of it is up to date, but if there's any info you need use Google as well... check this out... www.servodatabase.com