The best dovetail saw is the WILSON. But,they are very hard to come by!
Actually,any dovetail saw with a blade made from .015" AMERICAN 1095 spring steel(which is very hard to come by,I have a smallish supply-don't trust the Indian steel. It varies in hardness and possibly in carbon content,would be just fine. It's a matter of handle choice. And,I prefer MUCH,the brass backs that are FOLDED. Not just a little slit,glued in.
Ignore the BAD sentence composition here!