Celestron AstroMaster 90AZ is a great refractor and a good beginner model. But it is not worth higher than 200$. If you manage to find it around 170$, it is a steal.
AstroMaster 90EQ is the only telescope in the AstroMaster line that we actually recommend. It still has a wobbly, plastic mount. But its accessories and optics are vastly better than the other AstroMaster’s.
Celestron AstroMaster 76EQ is much better than the other AstroMaster’s, but we still don’t recommend it. The plastic mount is a frustration. While the optics are not bad, there are better choices for the same price.