My first and second horses were Arabians. I adored them and would consider owning another, definitely.
I guess my first one was sort of a-typical. He was really lazy and was a perfect beginner's horse. But sharp as a tack and very loving!
My second one was more stero-typical. He was always chomping at the bit and ready to go! But you know what, he taught me so much. Much more than if I would have just bought a dead-head. I credit him a lot for making me a fairly decent rider. He wasn't spooky- he just couldn't stand still for more than a few seconds at a time.
I think it is all about picking the right horse, of any breed. Pick the right individual and if it happens to be an Arabian, so be it. If it happens to be a Quarter Horse, so be it. And actually, the very best horse I have ever owned is a BLM Mustang! Who would have thunk!