I was able to pull the trigger on one of these a couple weeks ago, (thanks KJung!) but I wanted to wait until played with it a bit before posting a review. I've played through it on a few band rehearsals, and last weekend was my first actual gig with it. For reference purposes, I usually go for a punch/sizzle, Marcus type tone. Most of the gigs I do are in the R&B, funk, or jazz styles. I've been using an LDS 4x8 cab for the last 6 months or so, and I was playing through Eden cabs for years. I'm using it with an SWR SM400 right now, although I hope to get something else soon. I play a 5 string Peavey Cirrus. First off...this cab is LIGHT. I know you're thinking "I know its light" but trust me, its even lighter than you think. Lighter than the 47lbs specs sound. I loaded this thing in with one hand like it was nothing. After the show, I had the durmmer literally toss it down from the stage for me to catch. Its really that light. Last night at the house, I was able to lift it up while wrapping both pinky fingers around the handles. My cat could probably push this thing around on the floor while its on the castors. Its REALLY light. Secondly, it is very loud. I played through it at one of the loudest venues I usually play, with one of the loudest drummers in the area. And I had no problems at all hearing myself on stage and cutting through the mix. I used it with my SM400 (bridging it into 5.3 ohms should be a little over 400 watts.) Usually if I play a louder gig like this, I have to push the heck out of the SWR, and its hot enough to cook an egg on it by the end of the night. But this night I never had to push the master volume past 10:00, and I had plenty of headroom to spare. The low end was very full and punchy, all the way down to my .135 low B string. One thing I noticed with the 4x8 is that the low end was full when I was at home, but on gigs it seemed to go away. This wasn't the case at all with the 310UL. The top end is very smooth on the Epi - all of the sizzle I love is there but it doesn't have too much of a harsh sound at all. The top end on my SWR can get really brittle and harsh, and I usually have to cut some of the high mids to compensate. In the past that has been at the sacrifice of some of the clarity that I love, but through the Epifani it wasn't a problem at all - pure butter! So know my only decision is what head to replace the SWR with. I'm considering the Thunderfunk, the Eden WT550, and the Markbass LMII... I'll post a rig pic tonight when I get home from the office.