I still use a Tascam MSR24 because of the sound and it's only a 1". For me there definitely is a big difference in sound of tape being superior. As far as hiss, it has Dolby and I don't hear hiss especially with all the other noise introduced like a guitar amp, preamps or microphone etc. And certain things seem easier and more strait forward recording to tape. I mean, your not going to be tweaking a performance after the fact. Either it's a good performance or its not.
That being said, a good performance or song or what ever is still good wether it's tape or digital and I enjoy a lot of the computer tools and recording.
Oh, and the whole razor blade thing? I never did it. If it's bad, do it again.