I let my membership lapse in about 2003 at university, when I shelved my Schilke 58 in favour of a 59, in consultation with my teacher, for a few reasons. At the time, I felt like I was trying to play with a very large oral cavity in order to make the sound larger, warmer, which had some success, but made flexibility very difficult. I reasoned that a larger mouthpiece would enable me to play with a smaller oral cavity (ie jaw not as low), and in turn, I would regain some flexibility and comfort on the Bach 50 w/thayers I was playing at the time. I believe this was successful.
Since then, Ive ran the gamut of mouthpieces, all the way up the 60 size, and back to the 59, with everything in between. You name the brand; Ive probably played it. Just ask, its probably for sale.
Since about the middle of last year, my playing concepts have shifted. I started to look to make my playing less complex, with less tricks to produce my sound. Ive started playing more and more tenor, and have had to find different ways to make the tenor work. When I get in trouble on my Edwards bass, I tend to just throw a heap of air at the problem, and it clears up. Not so on either of my tenors. Ive had to physically play notes differently, not be so broad and open in the low range, and a far more compact embouchure setting in the upper register. This has started to creep into my bass playing, with positive effect.
I scaled back my bass equipment a little, moving from 59+ sized (my favourite being a Greg Black 1.25GM), to my old Schilke 59, to eventually a Hammond 20BL, which was a little more compact than my 59, but much richer in sound. I was pretty happy for 6 months or so.
A few weeks back, I started recording myself pretty heavily with my Zoom H2 (buy one, its changed my life), and was not terribly pleased with the results. Very bland sound. Big, yes, dark, yes, compact, yes, but not terribly interesting. Hmm.
So out came the draw of mouthpiece. I played and recorded on a few. My old Greg Black 1.25GM, Schilke 59, Stork 1.25. Eh, I still preferred the Hammond, but it wasnt really doing it for me.
What the hey, Ill stick in that Faxx 1.5G.
And, to my displeasure, I liked it.
I didnt want to like it. I havent played a mouthpiece that size for a long time, but it worked far better than I remembered. Funny how years of practice will do that.
I remember having to make large shifts with my jaw to get the sound I wanted from
on down. Nope, not anymore.I remember the sound being thinner, smaller. Not there this time, either.
SO Ive been beavering away on this piece for nearly 2 weeks, and am still enjoying the results. I still sound like me, but with a little more compactness, a little more life and energy to the sound. I dont believe it sounds any smaller than the 59-sized equipment I was using. Im still having a few issues moving between some registers, where the chops are probably remembering habits from the larger equipment, but its close, and getting better.
And Im enjoying practice for the first time in probably 6 months or so.
If I had one concern, it would be the dynamic curve on this piece. Being largely an orchestral bass trombonist who subs in American-style orchestras here in Australia (the person I largely sub for plays a Bach 50 w/Schilke 60), Im a little concerned that my sound may get too bright too early on this piece, but time will tell. Ill go play for a few people whose ears I trust, and see what they think. I wont tell them about the equipment change. Too much prejudice against the 1.5G in this town, sadly. Maybe I can rectify that.
But Im loving the sound, the ease of tone production, and most importantly, how much fun Im having!
So, I havent quite torn up the club-59 membership, yet, but I havent looked at it for a few weeks. I have a Greg Black 1.5GM on the way, should be here soon, which I cant wait to get my hands on, considering how much I loved his larger pieces.
Andrew (who cant quite believe hes playing a $30 mouthpiece)
The right one is out there... somewhere 
Isn't it the same as Sweden Svenne?