I have a Grace GMQ frame and a Juki that I also use as my primary machine. I wish I had 2 Jukis. I love my machine to death, but am going to save up for a long arm for the frame, to give me more room. I'll probably always use the Juki to piece though.
I like her one the frame- and the stitching quality is amazing. I am one that doesn't really use a lot of fancy stitches, so for me, the better quality, all metal straight stitch was the way to go.