I tried out the 5.1 at the MN quilt show and *loved* it! They had it set up with a Janome 1600P (fast stitching machine) and the guy told me to "floor it". I too wanted to buy one right then and there, but used my cell phone to call dh. Plus I really wasn't sure we should spend that much money right now. BUT, I'd get it right now if cost wasn't an issue. Don't really want a big longarm setup, I already like spray basting quilts, and this setup would make my machine quilting a lot easier.
What I have been looking at in addition to the Easy Quilter are these:
http://buildaquiltingframe.weebly.com/index.html
and
http://www.google.com/search?sourcei...logspot.com%2f
My dh is handy, so when he gets some time I think I will have him build me a setup similar to the Easy Quilter using the carriage wheels from the buildaquiltingframe website. Also want to look at the Edgerider wheels (used on longarm setups), as my dh likes the idea of building his own carriage.
I prefer the Easy Quilter because the quilt is already basted (easy to take down and put back up), there are only 2 rails, and the rails can extend beyond the limits of the table setup. For large quilts, I would cut the batting into 3 sections to reduce bulk under the arm.
I did read as many reviews of Easy Quilter as I could find here and by Googling. All of them were positive for the newer frames with the carriage.