I know this is an old thread, but I must pitch-in re the Hohner Corona lllN Extreme, since I have one also. I'm glad to hear the positive comments for the use of this dandy little box for Zydeco & I give you all "Thumbs Up" on your comments. I have very nice custom built Excelsior Arena IV R (Sol) I had made for me in Italy, complete with Mics, Custom Sequins, back pad, etc. years back for both Tex-Mex & Zydeco. It has a great sound for both & the store owner in OR who ordered it for me said some T-M Gabbie lovers preferred the sound of this one when he gave them the "Blindfolded" test, tricking them into thinking the two Accordeons were both G's. It sounds beautiful for Zydeco when you have all 4 reeds going (LMMM) & plenty wet, but I never got used to the heaviness of the dang thing.
Therefore, in shopping around for a box for both T-M & Zy in the very highly desired Fa (F-Bb-Eb), I tried a lll N Extreme out in a music store (a GCF "Sol" one) & discovered in addition to a beautiful 2-reed T-M sound, it also got a very decent LMM sound, not real wet, but for me quite suitable for Zydeco & well worth it cause it is so much lighter. True, it doesn't get that real wet LMMM Gabbenelli/Excelsior, etc sound, but quite close when those particular Accordeons are on the LMM Switch. Therefore, I searched last year & found one online in Fa - Just perfect ! For the sake of the lightness, the small sacrifice was well worth it & boy, does this baby ever SING ! And for those of you who like the 2-reed Hohner Corona ll Zydeco Accordeon sound of say Queen Ida, etc. you're really in for a treat, because this particular register on this box has the sweetest sound ever. Just sayin' ...."Now, go on down 'n Git Ya One !"