There will be lots of opinions on this so I suppose the answer is "it depends"...
If you hit lots of things at speed and often, then you might be better protecting your servo with a saver.
When I ran a 210 a few years back, I ran the 1258 servo with no saver and had no problems...in fact I broke the steering arms (replaced with cf piece) or popped ball ends instead. An all metal gear servo is a must however.
I'm sure somebody who disagree's will add an opposing argument and suggest a suitable saver. I would say that if you are getting back into racing, having accurate steering is going to make everything much more enjoyable!
HTH