Since those are floorstanding speakers, I assume that is what we are talking about.
The PSB Image T6 is the best-sounding speaker you can get in that price range. It has had repeated rave reviews from The Absolute Sound and Stereophile, among others.
They are $1300 at full price, but Saturday Audio has them for under $1100 per pair.
I had them for two years before upgrading to some more expensive speakers that I fell in love with, but they are nonetheless excellent speakers. There is nothing "bright" about them.
You don't mention what receiver or amplifier you are driving your Wharfedales with. I don't recall most Wharfedales being that "bright", but I have no experience with that model of speaker.
Hove you ever taken them to a store and tried them with a different amplifier (known to sound good) to see if they sound better?
Contrary to what some may allege, many amplifiers and receivers have audible distortion which makes ALL speakers sound "gritty" or "bright"....not pleasant to listen to.
You really should make sure it is the speakers and not the amplifier or receiver that is the main problem before you waste money on the wrong thing.
Many years ago, I learned this lesson the hard way. I bought a set of very expensive speakers which sounded wonderful in the store. They sounded "gritty" and "bright" with my amplifier at home (an expensive 125W Yamaha amplifier). My amplifier was the problem. I bought a much less expensive NAD amplifer, and they sounded wonderful; just like in the store.
Lesson learned; those who say all amplifiers sound the same are dead wrong!
Edited by commsysman - 1/7/13 at 7:50am