Revel F208s upgrade from Silverline Sonatina IIIs?

I have Silverline Sonatina IIIs and would like to upgrade, used/demo in the $5K range. The Revel Performa F280s get rave reviews. Can anyone comment on whether the REvels will be a major/minor improvement over the Silverlines?

System is transport/mac into Wyred 4 Sound DAC2 DSD into Cary SLP98 F1 direct coupled all options, Pope tubes into Manley Snappers, 6CA7 tubes, Audience Au24se cabling. Room is 15 x 22 with 9 ft ceilings.

Thank you.