If you can find one the New Forest has a great reputation, though I have never tried one.
Funny you should mention New Forest -- they just came out with their new brush, a silvertip, for $55 or so (depending on the exchange rate -- it's 35GBP including international shipping). I've ordered one myself, so hopefully it's good. Obviously, nobody's tried them except Fido, the vendor, and he's been banned from B&B (but not filtered, so we can still discuss his products). It's a little more than the OP's budget, but, if the reports of the finest are anything to judge by, it'll probably be a good deal.
The Simpson Wee Scot and Simpson Special are in your price range. The Wee Scot is a tiny brush but search B&B and you'll find that many people love it for face lathering. There's also the Simpson Commodore X1 at $54.
http://thesuperiorshave.com/Simpsons_Brushes.html
I am also looking for a new brush in the same price range (around $50) and have narrowed my choices to the Omega 636 or the Edwin Jagger Medium Best Badger.
I mainly use creams but do use soaps every now and again. I prefer to bowl lather.
Which of these brushes would you recommend? Also happy to be persuaded to look at others.
Thanks in advance.