I just bought classicshaving's last available Rooney's 3/1 in finest. According to the customer service representative with whom I spoke, this was their last 3/1 in finest, possibly their last of any handle-design, small, in finest. Considering the amount of time I had spent going to various websites and looking for this brush, I am pretty confident it is the last available one of these brushes that can be bought in public. (Except of course on B/S/T.)
Did I pay a lot? Yes. Would I have been willing to pay more. Absolutely. Score one for me!
Since you already have a few supers, I would go with the finest - it's really a different products and quite outstanding. If you are looking to save money why buy another brush at all?