First off, congrats on the Beretta as it's a classic beauty that shoots as good as it looks!
As far as the 1911, in your ballpark I think you will find that most of the recommendations will have the RIA models at the top of their list for good reason
--so have a look at those as I don't see anyway you can go wrong.
Also, I would say take a look at the Regent R100 as it too is in that same $$$ ballpark. I have one and it's IMO among the best value entry-level 1911's to be found
.
You will get lots of responses so take your time and evaluate and be sure to let us know what you decide on!
-Cheers