Hmm. The Wharfedales are good speakers. I wouldn't jump ship unless you were going for major changes in presentation like Tekton Double Impact or Martin Logan ESLs etc. The Harbeths are fine but I'm not convinced you'll get the bang for the buck you seek. Floor standing Spendors might get you there.
speaker upgrade
I would appreciate your advice on upgrading from Wharfedale Jade 3 standmounters. Current system is Cambridge CXA-81, miniDSP SHD streamer with Dirac Live, SVS sub, lower-end AudioQuest cables, Furman power conditioner and assorted acoustic panels & tube traps. Room is 12x15x8 with two open doorways, rugs, heavy curtains. I like the "British" sound - musical, not so bright. I listen to a lot of vocals of different types, for example Melody Gardot and Sinatra, but also Argentine tango (GoTan Project, Tangetto). Seldom crank it up too much.
Budget is, say, under $2,000 and used is fine. I've been thinking of a Harbeth P3ESR, but I haven't heard them. I may have someone interested in my Jade 3's so I may need to move faster than I might otherwise do. Any suggestions would be appreciated.