A good one will compare favourably to reasonable priced 50 degree FOV eyepieces.
If you want wider fields then individual eyepieces are the way to go.
It is great to be able to start of wide and then zoom in without having to change eyepieces, and you start to get a feel for which magnifications work best with your scope, your seeing and your favourite targets. You can then choose to pickup a couple of high quality single eyepieces once you get to know your viewing habits.
Zoooms hold their value pretty well too, if you buy 2nd hand, you will pretty much get your money back if you decide to sell it on at some point. Very little risk really.
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