I just bought the Juki TL2010Q (sight unseen and without trying it prior). I love it! It was perfect right from the start, and have not had to mess with tension at all! I love it! I did not have a Juki dealer within 100 miles, but did speak with my local repairman and he highly recommended it because of it's reputation and the all metal parts inside.
It depends on what you are looking for. If you want a straight stitch piecing and quilting machine, it's perfect. If you are looking for more stitches, it will not be the one you need.