Please any guidance would be a great help, if none of the above examples are decent I'm happy to be pointed in the right direction, cheers.
20 servos, need a Mega I believe to have enough timers.https://www.arduino.cc/en/Reference/Servo
You might look on youtube and see if you can see any of these bots in action. They may not be as exciting as they might look. Bots with a lot of servos often use separate servo controllers, like the bigger bot you linked to.
What do you mean by separate servo controllers? A separate arduinonpard for every servo?
One of these robot's are around $300 and the servo's that they come with seem to work perfectly fine on the youtube video's.
I can invest in lesser robots and build up my knowledge that way but I don't have funds to burn.
My thoughts are to buy this bigger one, start tinkering with just a simple build. One servo, then slowly build limbs and as I get better start building the entire robot and programming it. That way I'm not throwing old parts out and wasting as much.
---> If this is definitely not the way to go about it and I'll be wasting my time please let me know.
I know I'm jumping into something I have no idea about but that's exactly why I've made this post, as I said I'm willing to learn everything I need to.
I will definitely study up on Arduino before making a purchase, and perhaps a single board and a few bits of hardware to start off with.