Hardware stores, big box stores and even Walmart has different kinds of brooms. I bought an angled one at Walmart and it has nylon bristles though. Personally I prefer a straight broom....my old one was from "Stanley" and I don't know if there is even a Stanley company any more. It had a combination of types of bristles and I used that broom until it was worn out.

Check out the artisan broom makers on Etsy.com -- there may be one that fits your needs on there ....

The broom I bought after participating in the Nessentials thread is this one on Amazon, and it's brilliant (not that you don't have to clean it from time to time, but it is great ant one-pass sweeping). The turned up corners are fairly flexible and fit under and around things.

Here is a link that might be useful: Boar Hair Broom on amazon