I've never listened to tube preamps, but based on the searches I've run, and based on the replies so far it seems a tube preamp is the better approach. Even if I could listen to some of them in a demo room I think the difficulty would be that in the end it may still not be representative of the sound I would get within my system.
The way i described the "hissing" may not be accurate, but "dryness" does come to mind. I will continue researching in the tube section for a bit.
The way i described the "hissing" may not be accurate, but "dryness" does come to mind. I will continue researching in the tube section for a bit.