I've got a Bolder modded SB3, and I run the digital out thru a DAC. I recently bought a Touch to try out. I also ran it thru my DAC. My plan was to sell the SB3 and then at some point, get the touch modded by Bolder. Well, the modded SB3 was SO much better than the stock touch, that I ended up returning the Touch. I just wasn't going to be able to live with such a step down in sound quality.
I did talk to Wayne at Bolder, he told me that it is easier to get better sound out of the Touch, than it is the SB3. And for less money. But I've already got the SB3 & power supply and it's paid for! So, FWIW, unless you're ready to start the modding process all over again and you want to dump more money into it, I'd stick with the SB2 and add a DAC.
I did talk to Wayne at Bolder, he told me that it is easier to get better sound out of the Touch, than it is the SB3. And for less money. But I've already got the SB3 & power supply and it's paid for! So, FWIW, unless you're ready to start the modding process all over again and you want to dump more money into it, I'd stick with the SB2 and add a DAC.