I've tried a lot that just don't work for me. The plastic Leblanc that came with the straight plastic horn was awful. The Selmer C* didn't work either (used off eBay,maybe a bad one) Two of the worst were the Runyon (supposedly the largest opening available) and the Fobes Debut. The Grabner has been the best by far with the vintage Leblanc that came with the paperclip a close second. I see that Clark Fobes has he top of the line San Francisco model at $325 ($40 more then the Grabner) so I guess at least he thinks it's the best one out there. Any comments on the any of these? What do you use ?