Out of the ones you mentioned I only have experience with the Cary and the Sachs.
Only buy the SLP-98 if your system is bright and you want to tame it. A LOT. The Cary is warm and lush to a fault, at least to my ears.
I currently have the Don Sachs Model 2 with all the latest goodies. I am extremely happy with this preamp and have no problem recommending it.
The deHavilland mentioned above is pretty good also.
Oz
Only buy the SLP-98 if your system is bright and you want to tame it. A LOT. The Cary is warm and lush to a fault, at least to my ears.
I currently have the Don Sachs Model 2 with all the latest goodies. I am extremely happy with this preamp and have no problem recommending it.
The deHavilland mentioned above is pretty good also.
Oz