Having heard the Levinson 37 in my system, I'd say the Sony in its stock form was close to it; however, I admit to not liking the Levinson in my system that much. Since I had the Kern modifications done to my Sony, its performance as a transport has been more pleasing to me in that it's less clinical and more musical, if that makes sense. The CEC transports are like that as well; I'd choose them over a stock Sony. But I love the Forsell sound and analog, so that's my bias.
I'm only talking redbook here. As far as the Sony sending a DSD signal, unless you get it modified or get one of the new ones with a DSD output, it won't send a DSD digital signal, you'll need to use its analog outputs for that, and there's no guarantee that the dCS 1394 port upgrade that can be put onto the Delius will lock in to any digital interface other than the one from the dCS Verdi transport (which, by the way, is an excellent transport, if you can afford it, but won't handle DVD-V or DVD-A, I believe), as my recollection is that dCS's interface is proprietary--you should check with dCS if you're looking to use it as a DAC for a DSD signal. And by the way, having heard it on a lot of occasions, the Verdi/Delius combination is top-notch, just very expensive.
I'm only talking redbook here. As far as the Sony sending a DSD signal, unless you get it modified or get one of the new ones with a DSD output, it won't send a DSD digital signal, you'll need to use its analog outputs for that, and there's no guarantee that the dCS 1394 port upgrade that can be put onto the Delius will lock in to any digital interface other than the one from the dCS Verdi transport (which, by the way, is an excellent transport, if you can afford it, but won't handle DVD-V or DVD-A, I believe), as my recollection is that dCS's interface is proprietary--you should check with dCS if you're looking to use it as a DAC for a DSD signal. And by the way, having heard it on a lot of occasions, the Verdi/Delius combination is top-notch, just very expensive.