I recently was able to finagle a nice Craigslist deal on a very new pristine Acme Low B4 series II. Found it in Phoenix. Turns out my folks winter there as snowbirds. I sent them the $$, they met the guy, paid him and he gave them the Low B4 & a box. So I have business in Phoenix in January, I fly out there to spend the weekend with the 'rents. They take me, box, Low B4 and all, to the nearest Fedex. Using my fedex acct, I ship to myself. Voi'la! I had a Low B4 series I 8ohm cabinet that was great, but the Phoenix series II 4 ohm sounds sooooo nice with the Markbass SA450 at 500W that it's unbelievable and subtracts about 50 lbs from my rack rig involving a certain CA-9 lead sled. I'll still use the sled for larger venues, but for clubs and weddings, it's Markbass and either the Acme 4x10 or 2x10 all the way.