I've been playing two years now, on a variety of alto saxophones and mouthpieces and just received the Onyxite PPT Alto MP in 6** (or 7M) tip opening for my birthday today.
I also tried three D'Addario MPs in 5, 6, & 7 openings recently but none of them suited me.
The Bari was replaced a few months ago with a Yamaha 6CM with 1.9mm tip opening as this gave me a jazzier sound with my favourite Rico Jazz Select 2S filed reed. This combo sounded great on my newly acquired Yamaha YAS-62 MkI "Purple Logo" (which came with the 6CM) but not quite so good on my Buffet SDA which I'd played for around a year prior (I've been through a good few horns on my short sax journey!).
So today I put an RJS reed on the new PPT (her name is Poppet!) and tried this combo on the 62. A little worried by its wider 2.1mm tip, I took my first breath and played... WOW!!!!! Suddenly I'm a professional!!!!!!??
I switched back to the 6CM to check... had I really been happy with its sound? Yes, I guess... but now IT HAS TO GO IN THE BIN!!!
"Blown" away by my new sound, admittedly with a few "getting used to it" squeaks here and there, I thought I'd give it a go on the Buffet, having tried and tried with other mouthpiece/reed combinations to get a jazzy sound out of what is sometimes described as a more classical instrument.
Oh WOW even more!!! This MP has transformed my SDA into a 62 Purple Logo! In fact, it is absolutely perfectly controllable on this horn without a squeak or bum note. This IS the holy grail MP for my SDA!!
And LOUD! On both horns I could blow as hard as I can and the sound kept coming.
I tried some other reeds, around a dozen different ones, but the RJS 2S filed is the best so far for me. I think the squeaks on the Yamaha horn are down to the wider tip and should come good with a few more hours. Talking about hours... my mouth aches! I've been playing for three hours and didn't want to put this MP down! Don't panic though, it's an easy blow. I just spent too long testing it!
At £185 it's over ten times what I paid for the Bari but for me it represents excellent value, just for the fun I've had today, let alone the rest of my playing life!