Vitor,
I personally don't like the BBE. I recently got one also to try to bring some beef into the 20/20. I feel that unless you turn up the LO contour all the way, it makes no difference at all and when you turn up the LO, it sounds way too boomy. I feel that overall the BBE ruins the sound actually. I'm sending it back. Not my cup of tea.
I'm on a similar quest as you it seems. New 20/20 owner here. Do you have your Orange yet? I still have yet to do the Deep mod, but I'm planning to soon. My 20/20 needs to be retubed first anyway.
There is no question that the 20/20 leaves me feeling short changed in terms of missing that "heavy" feeling. I haven't played in a band situation with it yet, but I'm hoping that I am actually going to appreciate the missing low end in terms of the overall mix anyway. But there is no question that its less enjoyable to stand in front of the amp and play, as before.
In the past I have had a 2-90 instead of the 20/20, with same preamp and that rig was orgasmic. I was so intoxicated by the tone that I would sometimes find myself just standing in the room hitting open G or E chords and listening to the puurrrrfect tone and chunking on it. Got compliments all the time, it was really the perfect sought after chunky rythmn rock sound.
I DEFINITELY do not get that with the 20/20. Sometimes I have to look down to see if I am actually hitting the E string because I can't freakin hear what I am expecting to hear. If I turn up the treble a bit to hear the bite, then I hear it, but its lacking the bass thump for sure.
In the end, the 2-90 was literally injuring my back. At this stage, its me and me only that has to heft my rig into the back trunk of my sedan. That's why 2x12 and that's why 20/20. I'm gonna do the deep mod, get a Mills Acoustics cab probably, and try to see if I can make this rig work because the size/weight is just way more practical. In the band setting it probably sits in a mix better anyway with some of the missing thump. Just not as much fun to stand in front of the amp alone I guess.
I also have to say that I think the 20/20 has a certain british singing quality that the 2-90 didn't have, probably because of the boosted mids. I was never entirely happy with my bluesy lead tones before with the 2-90 while I was orgasmic about my rythmn. The 20/20 on the other hand is giving me inspirational bluesy lead sounds. I find also with the 20/20 I have to be more attentive to not over-driving everything. I have to make sure my guitar volume is not quite full and I'm careful on the gain and such, otherwise my chunks turn into absolute mud, very easily.
But that previous 2-90 setup also had some custom speakers(not mine) that were pretty much filled with pillows to make them sound very tight...which they did, but they also sounded small at times. That could be why they sounded great for rythmn chunk but wimpy for blues leads. In other words, I might not be able to blame the amp. And I can't really remember now whether that setup had a lot of low end or not. One would say no it didn't. They were just "tight". But somehow it seemed like the 2-90 just had more weight behind it, without necessarily being woofy.
In any case, I'm definitely paying attention to your progress and I'm on a similar quest. Wanna make the 20/20 work.