First, disregard bps. Most fields will have you capped at 10-15 anyway. Honestly if I was buying new either the zenith or the mini gs. I like oleds and the ability to see my bolt move. Just my tastes. A mini gs is pretty much an axe.
If you're buying used, I would buy an older ego, an axe, or if you look hard enough you can find Dm12s in your price range
I agree with this advice completely. Make sure if you go with the Azodin that you're getting the Zii model that has the oled and not the original Zenith model. A lot of players will put down the stacked tube blow back models and solenoid driven sear, but the Zii is a surprising performer with high end features compared to many in the price range (On/off ASA, two piece barrel, macroline, oled, etc.).