What is a good all around high quality speaker to purchase?

Perlisten and Borresen deserve a listen. 

+1 @soix the Joseph Audio speakers accurate and musical.  
+1 Perlisten 

Agree with @soix recommendation . Joseph Audio Pearl or Perspective graphene. Another brand to consider IMHO is Wilson Audio. Often available in the resale market. I recently opted for a pair of Dynaudio Contour contour legacy limited to 1000 pairs worldwide. Very balanced and natural with fantastic imaging. No regrets.  Good luck !

There are speakers and then there are music system. I dont have an answer for the first, but if you are looking to get a music system, then go for Tocaro!!

+1 on Rockports if you can stretch, then you will never upgrade.

I was listening to Sonus Faber and others and there were a couple of ones of interest - I'd said $18k to $20k - when the sales guy said can you stretch to $25K.  I ordered the Atria IIs after listening for an hour.

Also, I heard Dali speakers recently when I was auditioning the Esoteric K-01XD, rather nice (British for outstanding) detailed but relaxed.  I was very impressed.

I have been a big fan of Audio Physic, I had Virgos for many years in my NYC & VT homes, and their more upscale offerings were out of my $$ range.  My daughter now has one pair of Virgos and I have her Tempos (part of her graduation present in 1998) attached to the TV.  (I don't watch disaster movies!)  The Audio Physic Avantera may be a possibility if you can find a dealer.  

Also +1 on Dynaudio, the only ones I have owned are the Focus 160s in my wife's system, but I plugged them into the big rig and was very impressed.  I have heard their bigger models and was impressed, so, if you can find a dealer.