Since you thought the Paradigms were bright sounding I’d avoid Focal for sure, and at this price level I’d avoid metal tweeters in general as well. You might consider some of the direct sellers who make pretty solid speakers and offer returns in case they don’t work out. These Ascend Sierra Towers (with RAAL tweeters) and Aperion Verus speakers are in your price range and should be a good step up from your Polks. Just a couple ideas.
https://www.aperionaudio.com/products/verus-v8t-tower-speaker

