Mac C220 vs. Cary Audio SLP 98P

I am thinking of selling my Mac C220 to purchase a Cary Audio SLP 98P. I have read and heard nothing but good things about the Cary and what a difference the addition of it has made in some systems. I must stay in the $4000.00 range and wonder if anyone has had the opportunity to hear these wonderful tube preamps, side by side? I have nothing bad to say about my Mac, I am just another obsessive compulsive hi-fi wacko and an looking for a change after about 4 years. Any observations will be welcome.
Jerry