Proac reference 8 signature or Meadowlark Kestrel

Are you referring to the Kestrel or the Kestrel II? I only heard the 1st gen Kestrel, and I've never heard a Proac that can touch them...

Good point from ZK. I am referring to the original Kestrel. To be specific, I have owned the original Kestrel, the Kestrel Hot Rod, The Kestrel II, and the Shearwater Hot Rod. Of those four models the Kestrel II, while the most attractive, is my least favorite. I sold my Shearwater HRs when we moved into a small apartment while a home was being built. I would purchase another pair if I could find a pair within driving distance.
As for the difference between the original Kestrel and the hot rod version, I could live with either.

Timrhu thank you for your responce!
I was thinking about the Kestrel II it's in Mint condition(cherry wood)costs about 800$ here in Europe...why do you feel its your least favorite?Isn't it better than the original?
Also if i do get the Proac 8 signature(800)i could get more powerfull amp but it dont know if i would use more than 5% out of it couse my room is small.

The Kestrel II is certainly a better looking speaker than the original Kestrel and to many people may sound better. I owned the Kestrel II for about six months and really tried to like it but it just didn't excite me. The sound was good and maybe had a more audiophile quality to it. To me that is a more sterile sound. It seemed to portray the music without the liveliness of the original.
Like so many other speakers, when I put the original Kestrels back in the system to compare I had that "now that sounds like music" feeling. What I like about the original Kestrel is its natural sound. I describe the original Kestrel as "warm." They have plenty of detail but never fatiguing. Another aspect of the Meadowlark speakers is their ability to deliver a three dimensional soundstage. Both models do this very well.
I had a similar feeling about the Proac 1.5s but to a lesser degree. Choosing between the Proacs and the Kestrel II is a much moree difficult choice. Both seem very well made with a slight edge to the Kestrel II.
Of course what really matters is your ears and your sonic preference. I would go with the Kestrels becuase I love the three dimensionality the time-aligned drivers gives. Probably hard to go wrong either way.
Good luck and please let us know which way you go.