I have 5 Koala pieces and have been impressed with the quality and workmanship! We had a winter home and summer home, and downsized into a small condo, so all of my Koala is in one room, with room for a 8' x 8' design wall. My smaller Koala sewing cabinet has become my computer desk. My larger one has the sewing machine sitting just off center, on the right. There is 18" of table top space to the right, AND an 18" extension. I have to say, the first 18" is always useful and has "stuff" sitting on it. I recently finished a quilt where I was continually changing threads, and there were 40 different ones sitting there, along with my scissors, thread stand, pins, pin cushion, a variety of sewing machine needles (changing for metallic threads, etc.) machine's screw driver, and different feet that I needed to change frequently. Everything was in close proximity, and I was able to buzz right along. I enjoy that space. The extra 18" extension is not really used for anything. When buying your new unit, just remember at some point you will probably enjoy a little extra space to the right of your machine. If the piece you buy has the sewing machine all the way to the right, be sure you can fit another unit of some sort next to it for "stuff." (When paperpiecing, I have a small cutting mat and a small iron in that area. And, my knees slide under, because it is the old "OutBack Plus.") Good luck in finding the perfect fit for your needs!
Dawn
In beautiful Northwest Montana