KEF LS50 or Harbeth P3ESR for desktop system?

I am using the LS 50 on my desktop. The Harbeths were a consideration. There is no dealer in the vicinity. So, I bought the Kefs from a local dealer where returns are easy. I've used two different amps with them, A Threshold 400A class A/ cascode and an ancient 25 watt per channel Stromberg Carlson tube amp with the tone and volume controls bypassed. (The power switch on the Threshold failed recently after 30 years of faithful service. So, I brought the Stromberg out of storage.)  Front end is a Mac into Anti Cables USB going into a Schitt Jotunheim multi bit dac with Anti Cables interconnects, etc. The Kefs are sitting on Isoacoustics desktop stands. The stands make a big improvement in imaging.
This desktop system is so good I get lost in the music while working. I can't believe how good the LS 50 sounds in this set up. The amazing to me is how three dimensional they sound with the SC, maybe even better than the Threshold. 
 
I listen primarily to acoustic jazz and some bluegrass - Tidal or ripped cds on ITunes through Bit Perfect. 

bbarlow690, any updates on the Harbeths?I’m interested to know what you think as I’m still undecided about buying them. 

@mdrums  
the LSR305 setup is very good... i had one and no complaints, great value. best positioning I found was me seated center of sofa with the speakers at each corner of sofa arm-rests, rotated at aboot 75-80 degrees toward me earholes

If desktop speakers are not on isolation stands like Isoacoustics already, I’d put them on those ASAP first and go from there as needed, always keeping the isolation stands.

Also gotta point out the ls50's are also  "generally agreed to be an improvement upon the legendary LS3/5s".

And in addition to Isoacoustics a proper digital correction system. PW AMP with ARC recommended. You'll be highly awarded.