KEF iQ70 vs. Martin Logan Preface vs. Suggestions

Hey everyone,

just looking for a little guidence on making some changes to my current set up. i've found reasonable deals lately for pairs of the Martin Logan Preface and the KEF iQ series speakers. I really need to keep the purchase at or below $1000 (26 and newly married).

i listen to vinyl 99% of the time and will be running these with:

Music Hall MMF7.1
Mcintosh MC2505
Mcintosh C28

i'm only asking because im ready to move on a purchase relatively soon.