Upgrade speakers from Sonatina IIIs under $5K?

Looking to replace Silverline Sonatina IIIs with slightly used/demo speakers for $5K or less. Have been looking at Gallo Ref 3.5s. Anyone have an idea about sonic diffs between the two speakers? Pre/Amp are Cary SLP98 F1 Direct Coupled into Manley Snappers with Audience Au24 cables all around. Thank you.