I don't have any personal experience with home gym type cross over machines but I can tell you from my research in lat pull/low row machines is to get the kind with two chrome guide rods. I have not noticed a difference between plate load and selectorized systems as long as they are both gliding on the chrome guide rods. What ever you do, make sure that you don't get the kind with the square carriage that slides on square powder coated tubing. They cause too much friction and you will hate the mahcine.
What is your budget and I'll see what I can find. I love looking at equipment that I can't afford. Kind of like porn.
Also, what exercises are you looking to do with it? I can pretty much do anything except chest flys with just a lat pull/low row machine ie. one arm side/front laterals, tricept pressdowns, lat pulldowns, seated row, bicept curls etc.