I have a Fender Studio 40 modeling amp combo, and fixed up my old Palatino to play around with it. I always used to just plug straight in, I didn't even use preamps because i thought they were noisy, so all of this stuff is new to me. First, the "acoustisonic" amp model is tuned up for piezos and it does some magic trick with compression or something where bow and pizz is the same volume, and sounds clean and good. In addition to the compression and the fancy amp model, the noise gate is good, because EUBs with piezos are noisy little monkeys. Then, a small-hall reverb, dialed down a bit, sounds really nice. For different pizz styles, their is an "acoustic sim" overlay which gives you three levels of creak and boom to choose from if you want to really emulate the sound od a true DB. When i use the 3 setting, it really does sound like my old DB plugged into an amp, which is neat.
To my ears, this stuff all sounds pretty good, and if i were still playing church, music theater, and pops gigs today, I might actually prefer an EUB with this digital stuff to a proper DB. I am interested to get into the weird stuff the amp has to offer, that might sound cool with a bow, but I'm still just impressed at how just plain good I'm able to get the Palatino sounding with this new digital magics.